Added come mirror for the edit page, including some buttons to make html

9 files changed, 4921 insertions, 3 deletions

diff --git a/core/views/expo.py b/core/views/expo.py
index 0168a07..65b6812 100644
--- a/core/views/expo.py
+++ b/core/views/expo.py
@@ -364,4 +364,4 @@ class ExpoPageForm(forms.Form):
     '''
     title = forms.CharField(widget=forms.TextInput(attrs={'size':'60', 'placeholder': "Enter title (displayed in tab)"}))
     html = forms.CharField(widget=forms.Textarea(attrs={"cols":80, "rows":20, 'placeholder': "Enter page content (using HTML)"}))
-    change_message = forms.CharField(widget=forms.Textarea(attrs={"cols":80, "rows":5, 'placeholder': "Descibe the change made (for git)"}))
+    change_message = forms.CharField(widget=forms.Textarea(attrs={"cols":80, "rows":3, 'placeholder': "Descibe the change made (for git)"}))
diff --git a/media/codemirror/codemirror.css b/media/codemirror/codemirror.css
new file mode 100644
index 0000000..38bf55f
--- /dev/null
+++ b/media/codemirror/codemirror.css
@@ -0,0 +1,176 @@
+.CodeMirror {
+  line-height: 1em;
+  font-family: monospace;
+
+  /* Necessary so the scrollbar can be absolutely positioned within the wrapper on Lion. */
+  position: relative;
+  /* This prevents unwanted scrollbars from showing up on the body and wrapper in IE. */
+  overflow: hidden;
+}
+
+.CodeMirror-scroll {
+  overflow: auto;
+  height: 300px;
+  /* This is needed to prevent an IE[67] bug where the scrolled content
+     is visible outside of the scrolling box. */
+  position: relative;
+  outline: none;
+}
+
+/* Vertical scrollbar */
+.CodeMirror-scrollbar {
+  position: absolute;
+  right: 0; top: 0;
+  overflow-x: hidden;
+  overflow-y: scroll;
+  z-index: 5;
+}
+.CodeMirror-scrollbar-inner {
+  /* This needs to have a nonzero width in order for the scrollbar to appear
+     in Firefox and IE9. */
+  width: 1px;
+}
+.CodeMirror-scrollbar.cm-sb-overlap {
+  /* Ensure that the scrollbar appears in Lion, and that it overlaps the content
+     rather than sitting to the right of it. */
+  position: absolute;
+  z-index: 1;
+  float: none;
+  right: 0;
+  min-width: 12px;
+}
+.CodeMirror-scrollbar.cm-sb-nonoverlap {
+  min-width: 12px;
+}
+.CodeMirror-scrollbar.cm-sb-ie7 {
+  min-width: 18px;
+}
+
+.CodeMirror-gutter {
+  position: absolute; left: 0; top: 0;
+  z-index: 10;
+  background-color: #f7f7f7;
+  border-right: 1px solid #eee;
+  min-width: 2em;
+  height: 100%;
+}
+.CodeMirror-gutter-text {
+  color: #aaa;
+  text-align: right;
+  padding: .4em .2em .4em .4em;
+  white-space: pre !important;
+  cursor: default;
+}
+.CodeMirror-lines {
+  padding: .4em;
+  white-space: pre;
+  cursor: text;
+}
+
+.CodeMirror pre {
+  -moz-border-radius: 0;
+  -webkit-border-radius: 0;
+  -o-border-radius: 0;
+  border-radius: 0;
+  border-width: 0; margin: 0; padding: 0; background: transparent;
+  font-family: inherit;
+  font-size: inherit;
+  padding: 0; margin: 0;
+  white-space: pre;
+  word-wrap: normal;
+  line-height: inherit;
+  color: inherit;
+  overflow: visible;
+}
+
+.CodeMirror-wrap pre {
+  word-wrap: break-word;
+  white-space: pre-wrap;
+  word-break: normal;
+}
+.CodeMirror-wrap .CodeMirror-scroll {
+  overflow-x: hidden;
+}
+
+.CodeMirror textarea {
+  outline: none !important;
+}
+
+.CodeMirror pre.CodeMirror-cursor {
+  z-index: 10;
+  position: absolute;
+  visibility: hidden;
+  border-left: 1px solid black;
+  border-right: none;
+  width: 0;
+}
+.cm-keymap-fat-cursor pre.CodeMirror-cursor {
+  width: auto;
+  border: 0;
+  background: transparent;
+  background: rgba(0, 200, 0, .4);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#6600c800, endColorstr=#4c00c800);
+}
+/* Kludge to turn off filter in ie9+, which also accepts rgba */
+.cm-keymap-fat-cursor pre.CodeMirror-cursor:not(#nonsense_id) {
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled=false);
+}
+.CodeMirror pre.CodeMirror-cursor.CodeMirror-overwrite {}
+.CodeMirror-focused pre.CodeMirror-cursor {
+  visibility: visible;
+}
+
+div.CodeMirror-selected { background: #d9d9d9; }
+.CodeMirror-focused div.CodeMirror-selected { background: #d7d4f0; }
+
+.CodeMirror-searching {
+  background: #ffa;
+  background: rgba(255, 255, 0, .4);
+}
+
+/* Default theme */
+
+.cm-s-default span.cm-keyword {color: #708;}
+.cm-s-default span.cm-atom {color: #219;}
+.cm-s-default span.cm-number {color: #164;}
+.cm-s-default span.cm-def {color: #00f;}
+.cm-s-default span.cm-variable {color: black;}
+.cm-s-default span.cm-variable-2 {color: #05a;}
+.cm-s-default span.cm-variable-3 {color: #085;}
+.cm-s-default span.cm-property {color: black;}
+.cm-s-default span.cm-operator {color: black;}
+.cm-s-default span.cm-comment {color: #a50;}
+.cm-s-default span.cm-string {color: #a11;}
+.cm-s-default span.cm-string-2 {color: #f50;}
+.cm-s-default span.cm-meta {color: #555;}
+.cm-s-default span.cm-error {color: #f00;}
+.cm-s-default span.cm-qualifier {color: #555;}
+.cm-s-default span.cm-builtin {color: #30a;}
+.cm-s-default span.cm-bracket {color: #997;}
+.cm-s-default span.cm-tag {color: #170;}
+.cm-s-default span.cm-attribute {color: #00c;}
+.cm-s-default span.cm-header {color: blue;}
+.cm-s-default span.cm-quote {color: #090;}
+.cm-s-default span.cm-hr {color: #999;}
+.cm-s-default span.cm-link {color: #00c;}
+span.cm-negative {color: #d44;}
+span.cm-positive {color: #292;}
+
+span.cm-header, span.cm-strong {font-weight: bold;}
+span.cm-em {font-style: italic;}
+span.cm-emstrong {font-style: italic; font-weight: bold;}
+span.cm-link {text-decoration: underline;}
+
+span.cm-invalidchar {color: #f00;}
+
+div.CodeMirror span.CodeMirror-matchingbracket {color: #0f0;}
+div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
+
+@media print {
+
+  /* Hide the cursor when printing */
+  .CodeMirror pre.CodeMirror-cursor {
+    visibility: hidden;
+  }
+
+}
diff --git a/media/codemirror/codemirror.js b/media/codemirror/codemirror.js
new file mode 100644
index 0000000..6706cf8
--- /dev/null
+++ b/media/codemirror/codemirror.js
@@ -0,0 +1,3190 @@
+// All functions that need access to the editor's state live inside
+// the CodeMirror function. Below that, at the bottom of the file,
+// some utilities are defined.
+
+// CodeMirror is the only global var we claim
+window.CodeMirror = (function() {
+  "use strict";
+  // This is the function that produces an editor instance. Its
+  // closure is used to store the editor state.
+  function CodeMirror(place, givenOptions) {
+    // Determine effective options based on given values and defaults.
+    var options = {}, defaults = CodeMirror.defaults;
+    for (var opt in defaults)
+      if (defaults.hasOwnProperty(opt))
+        options[opt] = (givenOptions && givenOptions.hasOwnProperty(opt) ? givenOptions : defaults)[opt];
+
+    var input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em");
+    input.setAttribute("wrap", "off"); input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off");
+    // Wraps and hides input textarea
+    var inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
+    // The empty scrollbar content, used solely for managing the scrollbar thumb.
+    var scrollbarInner = elt("div", null, "CodeMirror-scrollbar-inner");
+    // The vertical scrollbar. Horizontal scrolling is handled by the scroller itself.
+    var scrollbar = elt("div", [scrollbarInner], "CodeMirror-scrollbar");
+    // DIVs containing the selection and the actual code
+    var lineDiv = elt("div"), selectionDiv = elt("div", null, null, "position: relative; z-index: -1");
+    // Blinky cursor, and element used to ensure cursor fits at the end of a line
+    var cursor = elt("pre", "\u00a0", "CodeMirror-cursor"), widthForcer = elt("pre", "\u00a0", "CodeMirror-cursor", "visibility: hidden");
+    // Used to measure text size
+    var measure = elt("div", null, null, "position: absolute; width: 100%; height: 0px; overflow: hidden; visibility: hidden;");
+    var lineSpace = elt("div", [measure, cursor, widthForcer, selectionDiv, lineDiv], null, "position: relative; z-index: 0");
+    var gutterText = elt("div", null, "CodeMirror-gutter-text"), gutter = elt("div", [gutterText], "CodeMirror-gutter");
+    // Moved around its parent to cover visible view
+    var mover = elt("div", [gutter, elt("div", [lineSpace], "CodeMirror-lines")], null, "position: relative");
+    // Set to the height of the text, causes scrolling
+    var sizer = elt("div", [mover], null, "position: relative");
+    // Provides scrolling
+    var scroller = elt("div", [sizer], "CodeMirror-scroll");
+    scroller.setAttribute("tabIndex", "-1");
+    // The element in which the editor lives.
+    var wrapper = elt("div", [inputDiv, scrollbar, scroller], "CodeMirror" + (options.lineWrapping ? " CodeMirror-wrap" : ""));
+    if (place.appendChild) place.appendChild(wrapper); else place(wrapper);
+
+    themeChanged(); keyMapChanged();
+    // Needed to hide big blue blinking cursor on Mobile Safari
+    if (ios) input.style.width = "0px";
+    if (!webkit) scroller.draggable = true;
+    lineSpace.style.outline = "none";
+    if (options.tabindex != null) input.tabIndex = options.tabindex;
+    if (options.autofocus) focusInput();
+    if (!options.gutter && !options.lineNumbers) gutter.style.display = "none";
+    // Needed to handle Tab key in KHTML
+    if (khtml) inputDiv.style.height = "1px", inputDiv.style.position = "absolute";
+
+    // Check for OS X >= 10.7. This has transparent scrollbars, so the
+    // overlaying of one scrollbar with another won't work. This is a
+    // temporary hack to simply turn off the overlay scrollbar. See
+    // issue #727.
+    if (mac_geLion) { scrollbar.style.zIndex = -2; scrollbar.style.visibility = "hidden"; }
+    // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
+    else if (ie_lt8) scrollbar.style.minWidth = "18px";
+
+    // Delayed object wrap timeouts, making sure only one is active. blinker holds an interval.
+    var poll = new Delayed(), highlight = new Delayed(), blinker;
+
+    // mode holds a mode API object. doc is the tree of Line objects,
+    // frontier is the point up to which the content has been parsed,
+    // and history the undo history (instance of History constructor).
+    var mode, doc = new BranchChunk([new LeafChunk([new Line("")])]), frontier = 0, focused;
+    loadMode();
+    // The selection. These are always maintained to point at valid
+    // positions. Inverted is used to remember that the user is
+    // selecting bottom-to-top.
+    var sel = {from: {line: 0, ch: 0}, to: {line: 0, ch: 0}, inverted: false};
+    // Selection-related flags. shiftSelecting obviously tracks
+    // whether the user is holding shift.
+    var shiftSelecting, lastClick, lastDoubleClick, lastScrollTop = 0, draggingText,
+        overwrite = false, suppressEdits = false, pasteIncoming = false;
+    // Variables used by startOperation/endOperation to track what
+    // happened during the operation.
+    var updateInput, userSelChange, changes, textChanged, selectionChanged,
+        gutterDirty, callbacks;
+    // Current visible range (may be bigger than the view window).
+    var displayOffset = 0, showingFrom = 0, showingTo = 0, lastSizeC = 0;
+    // bracketHighlighted is used to remember that a bracket has been
+    // marked.
+    var bracketHighlighted;
+    // Tracks the maximum line length so that the horizontal scrollbar
+    // can be kept static when scrolling.
+    var maxLine = getLine(0), updateMaxLine = false, maxLineChanged = true;
+    var pollingFast = false; // Ensures slowPoll doesn't cancel fastPoll
+    var goalColumn = null;
+
+    // Initialize the content.
+    operation(function(){setValue(options.value || ""); updateInput = false;})();
+    var history = new History();
+
+    // Register our event handlers.
+    connect(scroller, "mousedown", operation(onMouseDown));
+    connect(scroller, "dblclick", operation(onDoubleClick));
+    connect(lineSpace, "selectstart", e_preventDefault);
+    // Gecko browsers fire contextmenu *after* opening the menu, at
+    // which point we can't mess with it anymore. Context menu is
+    // handled in onMouseDown for Gecko.
+    if (!gecko) connect(scroller, "contextmenu", onContextMenu);
+    connect(scroller, "scroll", onScrollMain);
+    connect(scrollbar, "scroll", onScrollBar);
+    connect(scrollbar, "mousedown", function() {if (focused) setTimeout(focusInput, 0);});
+    var resizeHandler = connect(window, "resize", function() {
+      if (wrapper.parentNode) updateDisplay(true);
+      else resizeHandler();
+    }, true);
+    connect(input, "keyup", operation(onKeyUp));
+    connect(input, "input", fastPoll);
+    connect(input, "keydown", operation(onKeyDown));
+    connect(input, "keypress", operation(onKeyPress));
+    connect(input, "focus", onFocus);
+    connect(input, "blur", onBlur);
+
+    function drag_(e) {
+      if (options.onDragEvent && options.onDragEvent(instance, addStop(e))) return;
+      e_stop(e);
+    }
+    if (options.dragDrop) {
+      connect(scroller, "dragstart", onDragStart);
+      connect(scroller, "dragenter", drag_);
+      connect(scroller, "dragover", drag_);
+      connect(scroller, "drop", operation(onDrop));
+    }
+    connect(scroller, "paste", function(){focusInput(); fastPoll();});
+    connect(input, "paste", function(){pasteIncoming = true; fastPoll();});
+    connect(input, "cut", operation(function(){
+      if (!options.readOnly) replaceSelection("");
+    }));
+
+    // Needed to handle Tab key in KHTML
+    if (khtml) connect(sizer, "mouseup", function() {
+        if (document.activeElement == input) input.blur();
+        focusInput();
+    });
+
+    // IE throws unspecified error in certain cases, when
+    // trying to access activeElement before onload
+    var hasFocus; try { hasFocus = (document.activeElement == input); } catch(e) { }
+    if (hasFocus || options.autofocus) setTimeout(onFocus, 20);
+    else onBlur();
+
+    function isLine(l) {return l >= 0 && l < doc.size;}
+    // The instance object that we'll return. Mostly calls out to
+    // local functions in the CodeMirror function. Some do some extra
+    // range checking and/or clipping. operation is used to wrap the
+    // call so that changes it makes are tracked, and the display is
+    // updated afterwards.
+    var instance = wrapper.CodeMirror = {
+      getValue: getValue,
+      setValue: operation(setValue),
+      getSelection: getSelection,
+      replaceSelection: operation(replaceSelection),
+      focus: function(){window.focus(); focusInput(); onFocus(); fastPoll();},
+      setOption: function(option, value) {
+        var oldVal = options[option];
+        options[option] = value;
+        if (option == "mode" || option == "indentUnit") loadMode();
+        else if (option == "readOnly" && value == "nocursor") {onBlur(); input.blur();}
+        else if (option == "readOnly" && !value) {resetInput(true);}
+        else if (option == "theme") themeChanged();
+        else if (option == "lineWrapping" && oldVal != value) operation(wrappingChanged)();
+        else if (option == "tabSize") updateDisplay(true);
+        else if (option == "keyMap") keyMapChanged();
+        else if (option == "tabindex") input.tabIndex = value;
+        else if (option == "showCursorWhenSelecting") updateSelection();
+        if (option == "lineNumbers" || option == "gutter" || option == "firstLineNumber" ||
+            option == "theme" || option == "lineNumberFormatter") {
+          gutterChanged();
+          updateDisplay(true);
+        }
+      },
+      getOption: function(option) {return options[option];},
+      getMode: function() {return mode;},
+      undo: operation(undo),
+      redo: operation(redo),
+      indentLine: operation(function(n, dir) {
+        if (typeof dir != "string") {
+          if (dir == null) dir = options.smartIndent ? "smart" : "prev";
+          else dir = dir ? "add" : "subtract";
+        }
+        if (isLine(n)) indentLine(n, dir);
+      }),
+      indentSelection: operation(indentSelected),
+      historySize: function() {return {undo: history.done.length, redo: history.undone.length};},
+      clearHistory: function() {history = new History();},
+      setHistory: function(histData) {
+        history = new History();
+        history.done = histData.done;
+        history.undone = histData.undone;
+      },
+      getHistory: function() {
+        function cp(arr) {
+          for (var i = 0, nw = [], nwelt; i < arr.length; ++i) {
+            nw.push(nwelt = []);
+            for (var j = 0, elt = arr[i]; j < elt.length; ++j) {
+              var old = [], cur = elt[j];
+              nwelt.push({start: cur.start, added: cur.added, old: old});
+              for (var k = 0; k < cur.old.length; ++k) old.push(hlText(cur.old[k]));
+            }
+          }
+          return nw;
+        }
+        return {done: cp(history.done), undone: cp(history.undone)};
+      },
+      matchBrackets: operation(function(){matchBrackets(true);}),
+      getTokenAt: operation(function(pos) {
+        pos = clipPos(pos);
+        return getLine(pos.line).getTokenAt(mode, getStateBefore(pos.line), options.tabSize, pos.ch);
+      }),
+      getStateAfter: function(line) {
+        line = clipLine(line == null ? doc.size - 1: line);
+        return getStateBefore(line + 1);
+      },
+      cursorCoords: function(start, mode) {
+        if (start == null) start = sel.inverted;
+        return this.charCoords(start ? sel.from : sel.to, mode);
+      },
+      charCoords: function(pos, mode) {
+        pos = clipPos(pos);
+        if (mode == "local") return localCoords(pos, false);
+        if (mode == "div") return localCoords(pos, true);
+        return pageCoords(pos);
+      },
+      coordsChar: function(coords) {
+        var off = eltOffset(lineSpace);
+        return coordsChar(coords.x - off.left, coords.y - off.top);
+      },
+      defaultTextHeight: function() { return textHeight(); },
+      markText: operation(markText),
+      setBookmark: setBookmark,
+      findMarksAt: findMarksAt,
+      setMarker: operation(addGutterMarker),
+      clearMarker: operation(removeGutterMarker),
+      setLineClass: operation(setLineClass),
+      hideLine: operation(function(h) {return setLineHidden(h, true);}),
+      showLine: operation(function(h) {return setLineHidden(h, false);}),
+      onDeleteLine: function(line, f) {
+        if (typeof line == "number") {
+          if (!isLine(line)) return null;
+          line = getLine(line);
+        }
+        (line.handlers || (line.handlers = [])).push(f);
+        return line;
+      },
+      lineInfo: lineInfo,
+      getViewport: function() { return {from: showingFrom, to: showingTo};},
+      addWidget: function(pos, node, scroll, vert, horiz) {
+        pos = localCoords(clipPos(pos));
+        var top = pos.yBot, left = pos.x;
+        node.style.position = "absolute";
+        sizer.appendChild(node);
+        if (vert == "over") top = pos.y;
+        else if (vert == "near") {
+          var vspace = Math.max(scroller.offsetHeight, doc.height * textHeight()),
+              hspace = Math.max(sizer.clientWidth, lineSpace.clientWidth) - paddingLeft();
+          if (pos.yBot + node.offsetHeight > vspace && pos.y > node.offsetHeight)
+            top = pos.y - node.offsetHeight;
+          if (left + node.offsetWidth > hspace)
+            left = hspace - node.offsetWidth;
+        }
+        node.style.top = (top + paddingTop()) + "px";
+        node.style.left = node.style.right = "";
+        if (horiz == "right") {
+          left = sizer.clientWidth - node.offsetWidth;
+          node.style.right = "0px";
+        } else {
+          if (horiz == "left") left = 0;
+          else if (horiz == "middle") left = (sizer.clientWidth - node.offsetWidth) / 2;
+          node.style.left = (left + paddingLeft()) + "px";
+        }
+        if (scroll)
+          scrollIntoView(left, top, left + node.offsetWidth, top + node.offsetHeight);
+      },
+
+      lineCount: function() {return doc.size;},
+      clipPos: clipPos,
+      getCursor: function(start) {
+        if (start == null || start == "head") start = sel.inverted;
+        if (start == "anchor") start = !sel.inverted;
+        if (start == "end") start = false;
+        return copyPos(start ? sel.from : sel.to);
+      },
+      somethingSelected: function() {return !posEq(sel.from, sel.to);},
+      setCursor: operation(function(line, ch, user) {
+        if (ch == null && typeof line.line == "number") setCursor(line.line, line.ch, user);
+        else setCursor(line, ch, user);
+      }),
+      setSelection: operation(function(from, to, user) {
+        (user ? setSelectionUser : setSelection)(clipPos(from), clipPos(to || from));
+      }),
+      getLine: function(line) {if (isLine(line)) return getLine(line).text;},
+      getLineHandle: function(line) {if (isLine(line)) return getLine(line);},
+      setLine: operation(function(line, text) {
+        if (isLine(line)) replaceRange(text, {line: line, ch: 0}, {line: line, ch: getLine(line).text.length});
+      }),
+      removeLine: operation(function(line) {
+        if (isLine(line)) replaceRange("", {line: line, ch: 0}, clipPos({line: line+1, ch: 0}));
+      }),
+      replaceRange: operation(replaceRange),
+      getRange: function(from, to, lineSep) {return getRange(clipPos(from), clipPos(to), lineSep);},
+
+      triggerOnKeyDown: operation(onKeyDown),
+      execCommand: function(cmd) {return commands[cmd](instance);},
+      // Stuff used by commands, probably not much use to outside code.
+      moveH: operation(moveH),
+      deleteH: operation(deleteH),
+      moveV: operation(moveV),
+      toggleOverwrite: function() {
+        if(overwrite){
+          overwrite = false;
+          cursor.className = cursor.className.replace(" CodeMirror-overwrite", "");
+        } else {
+          overwrite = true;
+          cursor.className += " CodeMirror-overwrite";
+        }
+      },
+
+      posFromIndex: function(off) {
+        var lineNo = 0, ch;
+        doc.iter(0, doc.size, function(line) {
+          var sz = line.text.length + 1;
+          if (sz > off) { ch = off; return true; }
+          off -= sz;
+          ++lineNo;
+        });
+        return clipPos({line: lineNo, ch: ch});
+      },
+      indexFromPos: function (coords) {
+        if (coords.line < 0 || coords.ch < 0) return 0;
+        var index = coords.ch;
+        doc.iter(0, coords.line, function (line) {
+          index += line.text.length + 1;
+        });
+        return index;
+      },
+      scrollTo: function(x, y) {
+        if (x != null) scroller.scrollLeft = x;
+        if (y != null) scrollbar.scrollTop = scroller.scrollTop = y;
+        updateDisplay([]);
+      },
+      getScrollInfo: function() {
+        return {x: scroller.scrollLeft, y: scrollbar.scrollTop,
+                height: scrollbar.scrollHeight, width: scroller.scrollWidth};
+      },
+      scrollIntoView: function(pos) {
+        var coords = localCoords(pos ? clipPos(pos) : sel.inverted ? sel.from : sel.to);
+        scrollIntoView(coords.x, coords.y, coords.x, coords.yBot);
+      },
+
+      setSize: function(width, height) {
+        function interpret(val) {
+          val = String(val);
+          return /^\d+$/.test(val) ? val + "px" : val;
+        }
+        if (width != null) wrapper.style.width = interpret(width);
+        if (height != null) scroller.style.height = interpret(height);
+        instance.refresh();
+      },
+
+      operation: function(f){return operation(f)();},
+      compoundChange: function(f){return compoundChange(f);},
+      refresh: function(){
+        updateDisplay(true, null, lastScrollTop);
+        if (scrollbar.scrollHeight > lastScrollTop)
+          scrollbar.scrollTop = lastScrollTop;
+      },
+      getInputField: function(){return input;},
+      getWrapperElement: function(){return wrapper;},
+      getScrollerElement: function(){return scroller;},
+      getGutterElement: function(){return gutter;}
+    };
+
+    function getLine(n) { return getLineAt(doc, n); }
+    function updateLineHeight(line, height) {
+      gutterDirty = true;
+      var diff = height - line.height;
+      for (var n = line; n; n = n.parent) n.height += diff;
+    }
+
+    function lineContent(line, wrapAt) {
+      if (!line.styles)
+        line.highlight(mode, line.stateAfter = getStateBefore(lineNo(line)), options.tabSize);
+      return line.getContent(options.tabSize, wrapAt, options.lineWrapping);
+    }
+
+    function setValue(code) {
+      var top = {line: 0, ch: 0};
+      updateLines(top, {line: doc.size - 1, ch: getLine(doc.size-1).text.length},
+                  splitLines(code), top, top);
+      updateInput = true;
+    }
+    function getValue(lineSep) {
+      var text = [];
+      doc.iter(0, doc.size, function(line) { text.push(line.text); });
+      return text.join(lineSep || "\n");
+    }
+
+    function onScrollBar(e) {
+      if (Math.abs(scrollbar.scrollTop - lastScrollTop) > 1) {
+        lastScrollTop = scroller.scrollTop = scrollbar.scrollTop;
+        updateDisplay([]);
+      }
+    }
+
+    function onScrollMain(e) {
+      if (options.fixedGutter && gutter.style.left != scroller.scrollLeft + "px")
+        gutter.style.left = scroller.scrollLeft + "px";
+      if (Math.abs(scroller.scrollTop - lastScrollTop) > 1) {
+        lastScrollTop = scroller.scrollTop;
+        if (scrollbar.scrollTop != lastScrollTop)
+          scrollbar.scrollTop = lastScrollTop;
+        updateDisplay([]);
+      }
+      if (options.onScroll) options.onScroll(instance);
+    }
+
+    function onMouseDown(e) {
+      setShift(e_prop(e, "shiftKey"));
+      // Check whether this is a click in a widget
+      for (var n = e_target(e); n != wrapper; n = n.parentNode)
+        if (n.parentNode == sizer && n != mover) return;
+
+      // See if this is a click in the gutter
+      for (var n = e_target(e); n != wrapper; n = n.parentNode)
+        if (n.parentNode == gutterText) {
+          if (options.onGutterClick)
+            options.onGutterClick(instance, indexOf(gutterText.childNodes, n) + showingFrom, e);
+          return e_preventDefault(e);
+        }
+
+      var start = posFromMouse(e);
+
+      switch (e_button(e)) {
+      case 3:
+        if (gecko) onContextMenu(e);
+        return;
+      case 2:
+        if (start) setCursor(start.line, start.ch, true);
+        setTimeout(focusInput, 20);
+        e_preventDefault(e);
+        return;
+      }
+      // For button 1, if it was clicked inside the editor
+      // (posFromMouse returning non-null), we have to adjust the
+      // selection.
+      if (!start) {if (e_target(e) == scroller) e_preventDefault(e); return;}
+
+      if (!focused) onFocus();
+
+      var now = +new Date, type = "single";
+      if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) {
+        type = "triple";
+        e_preventDefault(e);
+        setTimeout(focusInput, 20);
+        selectLine(start.line);
+      } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) {
+        type = "double";
+        lastDoubleClick = {time: now, pos: start};
+        e_preventDefault(e);
+        var word = findWordAt(start);
+        setSelectionUser(word.from, word.to);
+      } else { lastClick = {time: now, pos: start}; }
+
+      function dragEnd(e2) {
+        if (webkit) scroller.draggable = false;
+        draggingText = false;
+        up(); drop();
+        if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
+          e_preventDefault(e2);
+          setCursor(start.line, start.ch, true);
+          focusInput();
+        }
+      }
+      var last = start, going;
+      if (options.dragDrop && dragAndDrop && !options.readOnly && !posEq(sel.from, sel.to) &&
+          !posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") {
+        // Let the drag handler handle this.
+        if (webkit) scroller.draggable = true;
+        var up = connect(document, "mouseup", operation(dragEnd), true);
+        var drop = connect(scroller, "drop", operation(dragEnd), true);
+        draggingText = true;
+        // IE's approach to draggable
+        if (scroller.dragDrop) scroller.dragDrop();
+        return;
+      }
+      e_preventDefault(e);
+      if (type == "single") setCursor(start.line, start.ch, true);
+
+      var startstart = sel.from, startend = sel.to;
+
+      function doSelect(cur) {
+        if (type == "single") {
+          setSelectionUser(clipPos(start), cur);
+          return;
+        }
+        startstart = clipPos(startstart);
+        startend = clipPos(startend);
+        if (type == "double") {
+          var word = findWordAt(cur);
+          if (posLess(cur, startstart)) setSelectionUser(word.from, startend);
+          else setSelectionUser(startstart, word.to);
+        } else if (type == "triple") {
+          if (posLess(cur, startstart)) setSelectionUser(startend, clipPos({line: cur.line, ch: 0}));
+          else setSelectionUser(startstart, clipPos({line: cur.line + 1, ch: 0}));
+        }
+      }
+
+      function extend(e) {
+        var cur = posFromMouse(e, true);
+        if (cur && !posEq(cur, last)) {
+          if (!focused) onFocus();
+          last = cur;
+          doSelect(cur);
+          updateInput = false;
+          var visible = visibleLines();
+          if (cur.line >= visible.to || cur.line < visible.from)
+            going = setTimeout(operation(function(){extend(e);}), 150);
+        }
+      }
+
+      function done(e) {
+        clearTimeout(going);
+        var cur = posFromMouse(e);
+        if (cur) doSelect(cur);
+        e_preventDefault(e);
+        focusInput();
+        updateInput = true;
+        move(); up();
+      }
+      var move = connect(document, "mousemove", operation(function(e) {
+        clearTimeout(going);
+        e_preventDefault(e);
+        if (!ie && !e_button(e)) done(e);
+        else extend(e);
+      }), true);
+      var up = connect(document, "mouseup", operation(done), true);
+    }
+    function onDoubleClick(e) {
+      for (var n = e_target(e); n != wrapper; n = n.parentNode)
+        if (n.parentNode == gutterText) return e_preventDefault(e);
+      e_preventDefault(e);
+    }
+    function onDrop(e) {
+      if (options.onDragEvent && options.onDragEvent(instance, addStop(e))) return;
+      e_preventDefault(e);
+      var pos = posFromMouse(e, true), files = e.dataTransfer.files;
+      if (!pos || options.readOnly) return;
+      if (files && files.length && window.FileReader && window.File) {
+        var n = files.length, text = Array(n), read = 0;
+        var loadFile = function(file, i) {
+          var reader = new FileReader;
+          reader.onload = function() {
+            text[i] = reader.result;
+            if (++read == n) {
+              pos = clipPos(pos);
+              operation(function() {
+                var end = replaceRange(text.join(""), pos, pos);
+                setSelectionUser(pos, end);
+              })();
+            }
+          };
+          reader.readAsText(file);
+        };
+        for (var i = 0; i < n; ++i) loadFile(files[i], i);
+      } else {
+        // Don't do a replace if the drop happened inside of the selected text.
+        if (draggingText && !(posLess(pos, sel.from) || posLess(sel.to, pos))) return;
+        try {
+          var text = e.dataTransfer.getData("Text");
+          if (text) {
+            compoundChange(function() {
+              var curFrom = sel.from, curTo = sel.to;
+              setSelectionUser(pos, pos);
+              if (draggingText) replaceRange("", curFrom, curTo);
+              replaceSelection(text);
+              focusInput();
+            });
+          }
+        }
+        catch(e){}
+      }
+    }
+    function onDragStart(e) {
+      var txt = getSelection();
+      e.dataTransfer.setData("Text", txt);
+
+      // Use dummy image instead of default browsers image.
+      if (e.dataTransfer.setDragImage)
+        e.dataTransfer.setDragImage(elt('img'), 0, 0);
+    }
+
+    function doHandleBinding(bound, dropShift) {
+      if (typeof bound == "string") {
+        bound = commands[bound];
+        if (!bound) return false;
+      }
+      var prevShift = shiftSelecting;
+      try {
+        if (options.readOnly) suppressEdits = true;
+        if (dropShift) shiftSelecting = null;
+        bound(instance);
+      } catch(e) {
+        if (e != Pass) throw e;
+        return false;
+      } finally {
+        shiftSelecting = prevShift;
+        suppressEdits = false;
+      }
+      return true;
+    }
+    var maybeTransition;
+    function handleKeyBinding(e) {
+      // Handle auto keymap transitions
+      var startMap = getKeyMap(options.keyMap), next = startMap.auto;
+      clearTimeout(maybeTransition);
+      if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() {
+        if (getKeyMap(options.keyMap) == startMap) {
+          options.keyMap = (next.call ? next.call(null, instance) : next);
+        }
+      }, 50);
+
+      var name = keyNames[e_prop(e, "keyCode")], handled = false;
+      if (name == null || e.altGraphKey) return false;
+      if (e_prop(e, "altKey")) name = "Alt-" + name;
+      if (e_prop(e, flipCtrlCmd ? "metaKey" : "ctrlKey")) name = "Ctrl-" + name;
+      if (e_prop(e, flipCtrlCmd ? "ctrlKey" : "metaKey")) name = "Cmd-" + name;
+
+      var stopped = false;
+      function stop() { stopped = true; }
+
+      if (e_prop(e, "shiftKey")) {
+        handled = lookupKey("Shift-" + name, options.extraKeys, options.keyMap,
+                            function(b) {return doHandleBinding(b, true);}, stop)
+               || lookupKey(name, options.extraKeys, options.keyMap, function(b) {
+                 if (typeof b == "string" && /^go[A-Z]/.test(b)) return doHandleBinding(b);
+               }, stop);
+      } else {
+        handled = lookupKey(name, options.extraKeys, options.keyMap, doHandleBinding, stop);
+      }
+      if (stopped) handled = false;
+      if (handled) {
+        e_preventDefault(e);
+        restartBlink();
+        if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; }
+      }
+      return handled;
+    }
+    function handleCharBinding(e, ch) {
+      var handled = lookupKey("'" + ch + "'", options.extraKeys,
+                              options.keyMap, function(b) { return doHandleBinding(b, true); });
+      if (handled) {
+        e_preventDefault(e);
+        restartBlink();
+      }
+      return handled;
+    }
+
+    var lastStoppedKey = null;
+    function onKeyDown(e) {
+      if (!focused) onFocus();
+      if (ie && e.keyCode == 27) { e.returnValue = false; }
+      if (pollingFast) { if (readInput()) pollingFast = false; }
+      if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return;
+      var code = e_prop(e, "keyCode");
+      // IE does strange things with escape.
+      setShift(code == 16 || e_prop(e, "shiftKey"));
+      // First give onKeyEvent option a chance to handle this.
+      var handled = handleKeyBinding(e);
+      if (opera) {
+        lastStoppedKey = handled ? code : null;
+        // Opera has no cut event... we try to at least catch the key combo
+        if (!handled && code == 88 && e_prop(e, mac ? "metaKey" : "ctrlKey"))
+          replaceSelection("");
+      }
+    }
+    function onKeyPress(e) {
+      if (pollingFast) readInput();
+      if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return;
+      var keyCode = e_prop(e, "keyCode"), charCode = e_prop(e, "charCode");
+      if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
+      if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(e)) return;
+      var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
+      if (options.electricChars && mode.electricChars && options.smartIndent && !options.readOnly) {
+        if (mode.electricChars.indexOf(ch) > -1)
+          setTimeout(operation(function() {indentLine(sel.to.line, "smart");}), 75);
+      }
+      if (handleCharBinding(e, ch)) return;
+      fastPoll();
+    }
+    function onKeyUp(e) {
+      if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return;
+      if (e_prop(e, "keyCode") == 16) shiftSelecting = null;
+    }
+
+    function onFocus() {
+      if (options.readOnly == "nocursor") return;
+      if (!focused) {
+        if (options.onFocus) options.onFocus(instance);
+        focused = true;
+        if (scroller.className.search(/\bCodeMirror-focused\b/) == -1)
+          scroller.className += " CodeMirror-focused";
+      }
+      slowPoll();
+      restartBlink();
+    }
+    function onBlur() {
+      if (focused) {
+        if (options.onBlur) options.onBlur(instance);
+        focused = false;
+        if (bracketHighlighted)
+          operation(function(){
+            if (bracketHighlighted) { bracketHighlighted(); bracketHighlighted = null; }
+          })();
+        scroller.className = scroller.className.replace(" CodeMirror-focused", "");
+      }
+      clearInterval(blinker);
+      setTimeout(function() {if (!focused) shiftSelecting = null;}, 150);
+    }
+
+    // Replace the range from from to to by the strings in newText.
+    // Afterwards, set the selection to selFrom, selTo.
+    function updateLines(from, to, newText, selFrom, selTo) {
+      if (suppressEdits) return;
+      var old = [];
+      doc.iter(from.line, to.line + 1, function(line) {
+        old.push(newHL(line.text, line.markedSpans));
+      });
+      if (history) {
+        history.addChange(from.line, newText.length, old);
+        while (history.done.length > options.undoDepth) history.done.shift();
+      }
+      var lines = updateMarkedSpans(hlSpans(old[0]), hlSpans(lst(old)), from.ch, to.ch, newText);
+      updateLinesNoUndo(from, to, lines, selFrom, selTo);
+    }
+    function unredoHelper(from, to) {
+      if (!from.length) return;
+      var set = from.pop(), out = [];
+      for (var i = set.length - 1; i >= 0; i -= 1) {
+        var change = set[i];
+        var replaced = [], end = change.start + change.added;
+        doc.iter(change.start, end, function(line) { replaced.push(newHL(line.text, line.markedSpans)); });
+        out.push({start: change.start, added: change.old.length, old: replaced});
+        var pos = {line: change.start + change.old.length - 1,
+                   ch: editEnd(hlText(lst(replaced)), hlText(lst(change.old)))};
+        updateLinesNoUndo({line: change.start, ch: 0}, {line: end - 1, ch: getLine(end-1).text.length},
+                          change.old, pos, pos);
+      }
+      updateInput = true;
+      to.push(out);
+    }
+    function undo() {unredoHelper(history.done, history.undone);}
+    function redo() {unredoHelper(history.undone, history.done);}
+
+    function updateLinesNoUndo(from, to, lines, selFrom, selTo) {
+      if (suppressEdits) return;
+      var recomputeMaxLength = false, maxLineLength = maxLine.text.length;
+      if (!options.lineWrapping)
+        doc.iter(from.line, to.line + 1, function(line) {
+          if (!line.hidden && line.text.length == maxLineLength) {recomputeMaxLength = true; return true;}
+        });
+      if (from.line != to.line || lines.length > 1) gutterDirty = true;
+
+      var nlines = to.line - from.line, firstLine = getLine(from.line), lastLine = getLine(to.line);
+      var lastHL = lst(lines);
+
+      // First adjust the line structure
+      if (from.ch == 0 && to.ch == 0 && hlText(lastHL) == "") {
+        // This is a whole-line replace. Treated specially to make
+        // sure line objects move the way they are supposed to.
+        var added = [], prevLine = null;
+        for (var i = 0, e = lines.length - 1; i < e; ++i)
+          added.push(new Line(hlText(lines[i]), hlSpans(lines[i])));
+        lastLine.update(lastLine.text, hlSpans(lastHL));
+        if (nlines) doc.remove(from.line, nlines, callbacks);
+        if (added.length) doc.insert(from.line, added);
+      } else if (firstLine == lastLine) {
+        if (lines.length == 1) {
+          firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]) + firstLine.text.slice(to.ch), hlSpans(lines[0]));
+        } else {
+          for (var added = [], i = 1, e = lines.length - 1; i < e; ++i)
+            added.push(new Line(hlText(lines[i]), hlSpans(lines[i])));
+          added.push(new Line(hlText(lastHL) + firstLine.text.slice(to.ch), hlSpans(lastHL)));
+          firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0]));
+          doc.insert(from.line + 1, added);
+        }
+      } else if (lines.length == 1) {
+        firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]) + lastLine.text.slice(to.ch), hlSpans(lines[0]));
+        doc.remove(from.line + 1, nlines, callbacks);
+      } else {
+        var added = [];
+        firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0]));
+        lastLine.update(hlText(lastHL) + lastLine.text.slice(to.ch), hlSpans(lastHL));
+        for (var i = 1, e = lines.length - 1; i < e; ++i)
+          added.push(new Line(hlText(lines[i]), hlSpans(lines[i])));
+        if (nlines > 1) doc.remove(from.line + 1, nlines - 1, callbacks);
+        doc.insert(from.line + 1, added);
+      }
+      if (options.lineWrapping) {
+        var perLine = Math.max(5, scroller.clientWidth / charWidth() - 3);
+        doc.iter(from.line, from.line + lines.length, function(line) {
+          if (line.hidden) return;
+          var guess = Math.ceil(line.text.length / perLine) || 1;
+          if (guess != line.height) updateLineHeight(line, guess);
+        });
+      } else {
+        doc.iter(from.line, from.line + lines.length, function(line) {
+          var l = line.text;
+          if (!line.hidden && l.length > maxLineLength) {
+            maxLine = line; maxLineLength = l.length; maxLineChanged = true;
+            recomputeMaxLength = false;
+          }
+        });
+        if (recomputeMaxLength) updateMaxLine = true;
+      }
+
+      // Adjust frontier, schedule worker
+      frontier = Math.min(frontier, from.line);
+      startWorker(400);
+
+      var lendiff = lines.length - nlines - 1;
+      // Remember that these lines changed, for updating the display
+      changes.push({from: from.line, to: to.line + 1, diff: lendiff});
+      if (options.onChange) {
+        // Normalize lines to contain only strings, since that's what
+        // the change event handler expects
+        for (var i = 0; i < lines.length; ++i)
+          if (typeof lines[i] != "string") lines[i] = lines[i].text;
+        var changeObj = {from: from, to: to, text: lines};
+        if (textChanged) {
+          for (var cur = textChanged; cur.next; cur = cur.next) {}
+          cur.next = changeObj;
+        } else textChanged = changeObj;
+      }
+
+      // Update the selection
+      function updateLine(n) {return n <= Math.min(to.line, to.line + lendiff) ? n : n + lendiff;}
+      setSelection(clipPos(selFrom), clipPos(selTo),
+                   updateLine(sel.from.line), updateLine(sel.to.line));
+    }
+
+    function needsScrollbar() {
+      var realHeight = doc.height * textHeight() + 2 * paddingTop();
+      return realHeight * .99 > scroller.offsetHeight ? realHeight : false;
+    }
+
+    function updateVerticalScroll(scrollTop) {
+      var scrollHeight = needsScrollbar();
+      scrollbar.style.display = scrollHeight ? "block" : "none";
+      if (scrollHeight) {
+        scrollbarInner.style.height = sizer.style.minHeight = scrollHeight + "px";
+        scrollbar.style.height = scroller.clientHeight + "px";
+        if (scrollTop != null) {
+          scrollbar.scrollTop = scroller.scrollTop = scrollTop;
+          // 'Nudge' the scrollbar to work around a Webkit bug where,
+          // in some situations, we'd end up with a scrollbar that
+          // reported its scrollTop (and looked) as expected, but
+          // *behaved* as if it was still in a previous state (i.e.
+          // couldn't scroll up, even though it appeared to be at the
+          // bottom).
+          if (webkit) setTimeout(function() {
+            if (scrollbar.scrollTop != scrollTop) return;
+            scrollbar.scrollTop = scrollTop + (scrollTop ? -1 : 1);
+            scrollbar.scrollTop = scrollTop;
+          }, 0);
+        }
+      } else {
+        sizer.style.minHeight = "";
+      }
+      // Position the mover div to align with the current virtual scroll position
+      mover.style.top = displayOffset * textHeight() + "px";
+    }
+
+    function computeMaxLength() {
+      maxLine = getLine(0); maxLineChanged = true;
+      var maxLineLength = maxLine.text.length;
+      doc.iter(1, doc.size, function(line) {
+        var l = line.text;
+        if (!line.hidden && l.length > maxLineLength) {
+          maxLineLength = l.length; maxLine = line;
+        }
+      });
+      updateMaxLine = false;
+    }
+
+    function replaceRange(code, from, to) {
+      from = clipPos(from);
+      if (!to) to = from; else to = clipPos(to);
+      code = splitLines(code);
+      function adjustPos(pos) {
+        if (posLess(pos, from)) return pos;
+        if (!posLess(to, pos)) return end;
+        var line = pos.line + code.length - (to.line - from.line) - 1;
+        var ch = pos.ch;
+        if (pos.line == to.line)
+          ch += lst(code).length - (to.ch - (to.line == from.line ? from.ch : 0));
+        return {line: line, ch: ch};
+      }
+      var end;
+      replaceRange1(code, from, to, function(end1) {
+        end = end1;
+        return {from: adjustPos(sel.from), to: adjustPos(sel.to)};
+      });
+      return end;
+    }
+    function replaceSelection(code, collapse) {
+      replaceRange1(splitLines(code), sel.from, sel.to, function(end) {
+        if (collapse == "end") return {from: end, to: end};
+        else if (collapse == "start") return {from: sel.from, to: sel.from};
+        else return {from: sel.from, to: end};
+      });
+    }
+    function replaceRange1(code, from, to, computeSel) {
+      var endch = code.length == 1 ? code[0].length + from.ch : lst(code).length;
+      var newSel = computeSel({line: from.line + code.length - 1, ch: endch});
+      updateLines(from, to, code, newSel.from, newSel.to);
+    }
+
+    function getRange(from, to, lineSep) {
+      var l1 = from.line, l2 = to.line;
+      if (l1 == l2) return getLine(l1).text.slice(from.ch, to.ch);
+      var code = [getLine(l1).text.slice(from.ch)];
+      doc.iter(l1 + 1, l2, function(line) { code.push(line.text); });
+      code.push(getLine(l2).text.slice(0, to.ch));
+      return code.join(lineSep || "\n");
+    }
+    function getSelection(lineSep) {
+      return getRange(sel.from, sel.to, lineSep);
+    }
+
+    function slowPoll() {
+      if (pollingFast) return;
+      poll.set(options.pollInterval, function() {
+        readInput();
+        if (focused) slowPoll();
+      });
+    }
+    function fastPoll() {
+      var missed = false;
+      pollingFast = true;
+      function p() {
+        var changed = readInput();
+        if (!changed && !missed) {missed = true; poll.set(60, p);}
+        else {pollingFast = false; slowPoll();}
+      }
+      poll.set(20, p);
+    }
+
+    // Previnput is a hack to work with IME. If we reset the textarea
+    // on every change, that breaks IME. So we look for changes
+    // compared to the previous content instead. (Modern browsers have
+    // events that indicate IME taking place, but these are not widely
+    // supported or compatible enough yet to rely on.)
+    var prevInput = "";
+    function readInput() {
+      if (!focused || hasSelection(input) || options.readOnly) return false;
+      var text = input.value;
+      if (text == prevInput) return false;
+      if (!nestedOperation) startOperation();
+      shiftSelecting = null;
+      var same = 0, l = Math.min(prevInput.length, text.length);
+      while (same < l && prevInput[same] == text[same]) ++same;
+      if (same < prevInput.length)
+        sel.from = {line: sel.from.line, ch: sel.from.ch - (prevInput.length - same)};
+      else if (overwrite && posEq(sel.from, sel.to) && !pasteIncoming)
+        sel.to = {line: sel.to.line, ch: Math.min(getLine(sel.to.line).text.length, sel.to.ch + (text.length - same))};
+      replaceSelection(text.slice(same), "end");
+      if (text.length > 1000) { input.value = prevInput = ""; }
+      else prevInput = text;
+      if (!nestedOperation) endOperation();
+      pasteIncoming = false;
+      return true;
+    }
+    function resetInput(user) {
+      if (!posEq(sel.from, sel.to)) {
+        prevInput = "";
+        input.value = getSelection();
+        if (focused) selectInput(input);
+      } else if (user) prevInput = input.value = "";
+    }
+
+    function focusInput() {
+      if (options.readOnly != "nocursor" && (ie_lt9 || document.activeElement != input))
+        input.focus();
+    }
+
+    function scrollCursorIntoView() {
+      var coords = calculateCursorCoords();
+      scrollIntoView(coords.x, coords.y, coords.x, coords.yBot);
+      if (!focused) return;
+      var box = sizer.getBoundingClientRect(), doScroll = null;
+      if (coords.y + box.top < 0) doScroll = true;
+      else if (coords.y + box.top + textHeight() > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
+      if (doScroll != null) {
+        var hidden = cursor.style.display == "none";
+        if (hidden) {
+          cursor.style.display = "";
+          cursor.style.left = coords.x + "px";
+          cursor.style.top = (coords.y - displayOffset) + "px";
+        }
+        cursor.scrollIntoView(doScroll);
+        if (hidden) cursor.style.display = "none";
+      }
+    }
+    function calculateCursorCoords() {
+      var cursor = localCoords(sel.inverted ? sel.from : sel.to);
+      var x = options.lineWrapping ? Math.min(cursor.x, lineSpace.offsetWidth) : cursor.x;
+      return {x: x, y: cursor.y, yBot: cursor.yBot};
+    }
+    function scrollIntoView(x1, y1, x2, y2) {
+      var scrollPos = calculateScrollPos(x1, y1, x2, y2);
+      if (scrollPos.scrollLeft != null) {scroller.scrollLeft = scrollPos.scrollLeft;}
+      if (scrollPos.scrollTop != null) {scrollbar.scrollTop = scroller.scrollTop = scrollPos.scrollTop;}
+    }
+    function calculateScrollPos(x1, y1, x2, y2) {
+      var pl = paddingLeft(), pt = paddingTop();
+      y1 += pt; y2 += pt; x1 += pl; x2 += pl;
+      var screen = scroller.clientHeight, screentop = scrollbar.scrollTop, result = {};
+      var docBottom = needsScrollbar() || Infinity;
+      var atTop = y1 < pt + 10, atBottom = y2 + pt > docBottom - 10;
+      if (y1 < screentop) result.scrollTop = atTop ? 0 : Math.max(0, y1);
+      else if (y2 > screentop + screen) result.scrollTop = (atBottom ? docBottom : y2) - screen;
+
+      var screenw = scroller.clientWidth, screenleft = scroller.scrollLeft;
+      var gutterw = options.fixedGutter ? gutter.clientWidth : 0;
+      var atLeft = x1 < gutterw + pl + 10;
+      if (x1 < screenleft + gutterw || atLeft) {
+        if (atLeft) x1 = 0;
+        result.scrollLeft = Math.max(0, x1 - 10 - gutterw);
+      } else if (x2 > screenw + screenleft - 3) {
+        result.scrollLeft = x2 + 10 - screenw;
+      }
+      return result;
+    }
+
+    function visibleLines(scrollTop) {
+      var lh = textHeight(), top = (scrollTop != null ? scrollTop : scrollbar.scrollTop) - paddingTop();
+      var fromHeight = Math.max(0, Math.floor(top / lh));
+      var toHeight = Math.ceil((top + scroller.clientHeight) / lh);
+      return {from: lineAtHeight(doc, fromHeight),
+              to: lineAtHeight(doc, toHeight)};
+    }
+    // Uses a set of changes plus the current scroll position to
+    // determine which DOM updates have to be made, and makes the
+    // updates.
+    function updateDisplay(changes, suppressCallback, scrollTop) {
+      if (!scroller.clientWidth) {
+        showingFrom = showingTo = displayOffset = 0;
+        return;
+      }
+      // Compute the new visible window
+      // If scrollTop is specified, use that to determine which lines
+      // to render instead of the current scrollbar position.
+      var visible = visibleLines(scrollTop);
+      // Bail out if the visible area is already rendered and nothing changed.
+      if (changes !== true && changes.length == 0 && visible.from > showingFrom && visible.to < showingTo) {
+        updateVerticalScroll(scrollTop);
+        return;
+      }
+      var from = Math.max(visible.from - 100, 0), to = Math.min(doc.size, visible.to + 100);
+      if (showingFrom < from && from - showingFrom < 20) from = showingFrom;
+      if (showingTo > to && showingTo - to < 20) to = Math.min(doc.size, showingTo);
+
+      // Create a range of theoretically intact lines, and punch holes
+      // in that using the change info.
+      var intact = changes === true ? [] :
+        computeIntact([{from: showingFrom, to: showingTo, domStart: 0}], changes);
+      // Clip off the parts that won't be visible
+      var intactLines = 0;
+      for (var i = 0; i < intact.length; ++i) {
+        var range = intact[i];
+        if (range.from < from) {range.domStart += (from - range.from); range.from = from;}
+        if (range.to > to) range.to = to;
+        if (range.from >= range.to) intact.splice(i--, 1);
+        else intactLines += range.to - range.from;
+      }
+      if (intactLines == to - from && from == showingFrom && to == showingTo) {
+        updateVerticalScroll(scrollTop);
+        return;
+      }
+      intact.sort(function(a, b) {return a.domStart - b.domStart;});
+
+      var th = textHeight(), gutterDisplay = gutter.style.display;
+      lineDiv.style.display = "none";
+      patchDisplay(from, to, intact);
+      lineDiv.style.display = gutter.style.display = "";
+
+      var different = from != showingFrom || to != showingTo || lastSizeC != scroller.clientHeight + th;
+      // This is just a bogus formula that detects when the editor is
+      // resized or the font size changes.
+      if (different) lastSizeC = scroller.clientHeight + th;
+      if (from != showingFrom || to != showingTo && options.onViewportChange)
+        setTimeout(function(){
+          if (options.onViewportChange) options.onViewportChange(instance, from, to);
+        });
+      showingFrom = from; showingTo = to;
+      displayOffset = heightAtLine(doc, from);
+      startWorker(100);
+
+      // Since this is all rather error prone, it is honoured with the
+      // only assertion in the whole file.
+      if (lineDiv.childNodes.length != showingTo - showingFrom)
+        throw new Error("BAD PATCH! " + JSON.stringify(intact) + " size=" + (showingTo - showingFrom) +
+                        " nodes=" + lineDiv.childNodes.length);
+
+      function checkHeights() {
+        var curNode = lineDiv.firstChild, heightChanged = false;
+        doc.iter(showingFrom, showingTo, function(line) {
+          // Work around bizarro IE7 bug where, sometimes, our curNode
+          // is magically replaced with a new node in the DOM, leaving
+          // us with a reference to an orphan (nextSibling-less) node.
+          if (!curNode) return;
+          if (!line.hidden) {
+            var height = Math.round(curNode.offsetHeight / th) || 1;
+            if (line.height != height) {
+              updateLineHeight(line, height);
+              gutterDirty = heightChanged = true;
+            }
+          }
+          curNode = curNode.nextSibling;
+        });
+        return heightChanged;
+      }
+
+      if (options.lineWrapping) checkHeights();
+
+      gutter.style.display = gutterDisplay;
+      if (different || gutterDirty) {
+        // If the gutter grew in size, re-check heights. If those changed, re-draw gutter.
+        updateGutter() && options.lineWrapping && checkHeights() && updateGutter();
+      }
+      updateVerticalScroll(scrollTop);
+      updateSelection();
+      if (!suppressCallback && options.onUpdate) options.onUpdate(instance);
+      return true;
+    }
+
+    function computeIntact(intact, changes) {
+      for (var i = 0, l = changes.length || 0; i < l; ++i) {
+        var change = changes[i], intact2 = [], diff = change.diff || 0;
+        for (var j = 0, l2 = intact.length; j < l2; ++j) {
+          var range = intact[j];
+          if (change.to <= range.from && change.diff)
+            intact2.push({from: range.from + diff, to: range.to + diff,
+                          domStart: range.domStart});
+          else if (change.to <= range.from || change.from >= range.to)
+            intact2.push(range);
+          else {
+            if (change.from > range.from)
+              intact2.push({from: range.from, to: change.from, domStart: range.domStart});
+            if (change.to < range.to)
+              intact2.push({from: change.to + diff, to: range.to + diff,
+                            domStart: range.domStart + (change.to - range.from)});
+          }
+        }
+        intact = intact2;
+      }
+      return intact;
+    }
+
+    function patchDisplay(from, to, intact) {
+      function killNode(node) {
+        var tmp = node.nextSibling;
+        node.parentNode.removeChild(node);
+        return tmp;
+      }
+      // The first pass removes the DOM nodes that aren't intact.
+      if (!intact.length) removeChildren(lineDiv);
+      else {
+        var domPos = 0, curNode = lineDiv.firstChild, n;
+        for (var i = 0; i < intact.length; ++i) {
+          var cur = intact[i];
+          while (cur.domStart > domPos) {curNode = killNode(curNode); domPos++;}
+          for (var j = 0, e = cur.to - cur.from; j < e; ++j) {curNode = curNode.nextSibling; domPos++;}
+        }
+        while (curNode) curNode = killNode(curNode);
+      }
+      // This pass fills in the lines that actually changed.
+      var nextIntact = intact.shift(), curNode = lineDiv.firstChild, j = from;
+      doc.iter(from, to, function(line) {
+        if (nextIntact && nextIntact.to == j) nextIntact = intact.shift();
+        if (!nextIntact || nextIntact.from > j) {
+          if (line.hidden) var lineElement = elt("pre");
+          else {
+            var lineElement = lineContent(line);
+            if (line.className) lineElement.className = line.className;
+            // Kludge to make sure the styled element lies behind the selection (by z-index)
+            if (line.bgClassName) {
+              var pre = elt("pre", "\u00a0", line.bgClassName, "position: absolute; left: 0; right: 0; top: 0; bottom: 0; z-index: -2");
+              lineElement = elt("div", [pre, lineElement], null, "position: relative");
+            }
+          }
+          lineDiv.insertBefore(lineElement, curNode);
+        } else {
+          curNode = curNode.nextSibling;
+        }
+        ++j;
+      });
+    }
+
+    function updateGutter() {
+      if (!options.gutter && !options.lineNumbers) return;
+      var hText = mover.offsetHeight, hEditor = scroller.clientHeight;
+      gutter.style.height = (hText - hEditor < 2 ? hEditor : hText) + "px";
+      var fragment = document.createDocumentFragment(), i = showingFrom, normalNode;
+      doc.iter(showingFrom, Math.max(showingTo, showingFrom + 1), function(line) {
+        if (line.hidden) {
+          fragment.appendChild(elt("pre"));
+        } else {
+          var marker = line.gutterMarker;
+          var text = options.lineNumbers ? options.lineNumberFormatter(i + options.firstLineNumber) : null;
+          if (marker && marker.text)
+            text = marker.text.replace("%N%", text != null ? text : "");
+          else if (text == null)
+            text = "\u00a0";
+          var markerElement = fragment.appendChild(elt("pre", null, marker && marker.style));
+          markerElement.innerHTML = text;
+          for (var j = 1; j < line.height; ++j) {
+            markerElement.appendChild(elt("br"));
+            markerElement.appendChild(document.createTextNode("\u00a0"));
+          }
+          if (!marker) normalNode = i;
+        }
+        ++i;
+      });
+      gutter.style.display = "none";
+      removeChildrenAndAdd(gutterText, fragment);
+      // Make sure scrolling doesn't cause number gutter size to pop
+      if (normalNode != null && options.lineNumbers) {
+        var node = gutterText.childNodes[normalNode - showingFrom];
+        var minwidth = String(doc.size).length, val = eltText(node.firstChild), pad = "";
+        while (val.length + pad.length < minwidth) pad += "\u00a0";
+        if (pad) node.insertBefore(document.createTextNode(pad), node.firstChild);
+      }
+      gutter.style.display = "";
+      var resized = Math.abs((parseInt(lineSpace.style.marginLeft) || 0) - gutter.offsetWidth) > 2;
+      lineSpace.style.marginLeft = gutter.offsetWidth + "px";
+      gutterDirty = false;
+      return resized;
+    }
+    function updateSelection() {
+      var collapsed = posEq(sel.from, sel.to);
+      var fromPos = localCoords(sel.from, true);
+      var toPos = collapsed ? fromPos : localCoords(sel.to, true);
+      var headPos = sel.inverted ? fromPos : toPos, th = textHeight();
+      var wrapOff = eltOffset(wrapper), lineOff = eltOffset(lineDiv);
+      inputDiv.style.top = Math.max(0, Math.min(scroller.offsetHeight, headPos.y + lineOff.top - wrapOff.top)) + "px";
+      inputDiv.style.left = Math.max(0, Math.min(scroller.offsetWidth, headPos.x + lineOff.left - wrapOff.left)) + "px";
+      if (collapsed || options.showCursorWhenSelecting) {
+        cursor.style.top = headPos.y + "px";
+        cursor.style.left = (options.lineWrapping ? Math.min(headPos.x, lineSpace.offsetWidth) : headPos.x) + "px";
+        cursor.style.display = "";
+      } else {
+        cursor.style.display = "none";
+      }
+      if (!collapsed) {
+        var sameLine = fromPos.y == toPos.y, fragment = document.createDocumentFragment();
+        var clientWidth = lineSpace.clientWidth || lineSpace.offsetWidth;
+        var clientHeight = lineSpace.clientHeight || lineSpace.offsetHeight;
+        var add = function(left, top, right, height) {
+          var rstyle = quirksMode ? "width: " + (!right ? clientWidth : clientWidth - right - left) + "px"
+                                  : "right: " + (right - 1) + "px";
+          fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
+                                   "px; top: " + top + "px; " + rstyle + "; height: " + height + "px"));
+        };
+        if (sel.from.ch && fromPos.y >= 0) {
+          var right = sameLine ? clientWidth - toPos.x : 0;
+          add(fromPos.x, fromPos.y, right, th);
+        }
+        var middleStart = Math.max(0, fromPos.y + (sel.from.ch ? th : 0));
+        var middleHeight = Math.min(toPos.y, clientHeight) - middleStart;
+        if (middleHeight > 0.2 * th)
+          add(0, middleStart, 0, middleHeight);
+        if ((!sameLine || !sel.from.ch) && toPos.y < clientHeight - .5 * th)
+          add(0, toPos.y, clientWidth - toPos.x, th);
+        removeChildrenAndAdd(selectionDiv, fragment);
+        selectionDiv.style.display = "";
+      } else {
+        selectionDiv.style.display = "none";
+      }
+    }
+
+    function setShift(val) {
+      if (val) shiftSelecting = shiftSelecting || (sel.inverted ? sel.to : sel.from);
+      else shiftSelecting = null;
+    }
+    function setSelectionUser(from, to) {
+      var sh = shiftSelecting && clipPos(shiftSelecting);
+      if (sh) {
+        if (posLess(sh, from)) from = sh;
+        else if (posLess(to, sh)) to = sh;
+      }
+      setSelection(from, to);
+      userSelChange = true;
+    }
+    // Update the selection. Last two args are only used by
+    // updateLines, since they have to be expressed in the line
+    // numbers before the update.
+    function setSelection(from, to, oldFrom, oldTo) {
+      goalColumn = null;
+      if (oldFrom == null) {oldFrom = sel.from.line; oldTo = sel.to.line;}
+      if (posEq(sel.from, from) && posEq(sel.to, to)) return;
+      if (posLess(to, from)) {var tmp = to; to = from; from = tmp;}
+
+      // Skip over hidden lines.
+      if (from.line != oldFrom) {
+        var from1 = skipHidden(from, oldFrom, sel.from.ch);
+        // If there is no non-hidden line left, force visibility on current line
+        if (!from1) setLineHidden(from.line, false);
+        else from = from1;
+      }
+      if (to.line != oldTo) to = skipHidden(to, oldTo, sel.to.ch);
+
+      if (posEq(from, to)) sel.inverted = false;
+      else if (posEq(from, sel.to)) sel.inverted = false;
+      else if (posEq(to, sel.from)) sel.inverted = true;
+
+      if (options.autoClearEmptyLines && posEq(sel.from, sel.to)) {
+        var head = sel.inverted ? from : to;
+        if (head.line != sel.from.line && sel.from.line < doc.size) {
+          var oldLine = getLine(sel.from.line);
+          if (/^\s+$/.test(oldLine.text))
+            setTimeout(operation(function() {
+              if (oldLine.parent && /^\s+$/.test(oldLine.text)) {
+                var no = lineNo(oldLine);
+                replaceRange("", {line: no, ch: 0}, {line: no, ch: oldLine.text.length});
+              }
+            }, 10));
+        }
+      }
+
+      sel.from = from; sel.to = to;
+      selectionChanged = true;
+    }
+    function skipHidden(pos, oldLine, oldCh) {
+      function getNonHidden(dir) {
+        var lNo = pos.line + dir, end = dir == 1 ? doc.size : -1;
+        while (lNo != end) {
+          var line = getLine(lNo);
+          if (!line.hidden) {
+            var ch = pos.ch;
+            if (toEnd || ch > oldCh || ch > line.text.length) ch = line.text.length;
+            return {line: lNo, ch: ch};
+          }
+          lNo += dir;
+        }
+      }
+      var line = getLine(pos.line);
+      var toEnd = pos.ch == line.text.length && pos.ch != oldCh;
+      if (!line.hidden) return pos;
+      if (pos.line >= oldLine) return getNonHidden(1) || getNonHidden(-1);
+      else return getNonHidden(-1) || getNonHidden(1);
+    }
+    function setCursor(line, ch, user) {
+      var pos = clipPos({line: line, ch: ch || 0});
+      (user ? setSelectionUser : setSelection)(pos, pos);
+    }
+
+    function clipLine(n) {return Math.max(0, Math.min(n, doc.size-1));}
+    function clipPos(pos) {
+      if (pos.line < 0) return {line: 0, ch: 0};
+      if (pos.line >= doc.size) return {line: doc.size-1, ch: getLine(doc.size-1).text.length};
+      var ch = pos.ch, linelen = getLine(pos.line).text.length;
+      if (ch == null || ch > linelen) return {line: pos.line, ch: linelen};
+      else if (ch < 0) return {line: pos.line, ch: 0};
+      else return pos;
+    }
+
+    function findPosH(dir, unit) {
+      var end = sel.inverted ? sel.from : sel.to, line = end.line, ch = end.ch;
+      var lineObj = getLine(line);
+      function findNextLine() {
+        for (var l = line + dir, e = dir < 0 ? -1 : doc.size; l != e; l += dir) {
+          var lo = getLine(l);
+          if (!lo.hidden) { line = l; lineObj = lo; return true; }
+        }
+      }
+      function moveOnce(boundToLine) {
+        if (ch == (dir < 0 ? 0 : lineObj.text.length)) {
+          if (!boundToLine && findNextLine()) ch = dir < 0 ? lineObj.text.length : 0;
+          else return false;
+        } else ch += dir;
+        return true;
+      }
+      if (unit == "char") moveOnce();
+      else if (unit == "column") moveOnce(true);
+      else if (unit == "word") {
+        var sawWord = false;
+        for (;;) {
+          if (dir < 0) if (!moveOnce()) break;
+          if (isWordChar(lineObj.text.charAt(ch))) sawWord = true;
+          else if (sawWord) {if (dir < 0) {dir = 1; moveOnce();} break;}
+          if (dir > 0) if (!moveOnce()) break;
+        }
+      }
+      return {line: line, ch: ch};
+    }
+    function moveH(dir, unit) {
+      var pos = dir < 0 ? sel.from : sel.to;
+      if (shiftSelecting || posEq(sel.from, sel.to)) pos = findPosH(dir, unit);
+      setCursor(pos.line, pos.ch, true);
+    }
+    function deleteH(dir, unit) {
+      if (!posEq(sel.from, sel.to)) replaceRange("", sel.from, sel.to);
+      else if (dir < 0) replaceRange("", findPosH(dir, unit), sel.to);
+      else replaceRange("", sel.from, findPosH(dir, unit));
+      userSelChange = true;
+    }
+    function moveV(dir, unit) {
+      var dist = 0, pos = localCoords(sel.inverted ? sel.from : sel.to, true);
+      if (goalColumn != null) pos.x = goalColumn;
+      if (unit == "page") {
+        var screen = Math.min(scroller.clientHeight, window.innerHeight || document.documentElement.clientHeight);
+        var target = coordsChar(pos.x, pos.y + screen * dir);
+      } else if (unit == "line") {
+        var th = textHeight();
+        var target = coordsChar(pos.x, pos.y + .5 * th + dir * th);
+      }
+      if (unit == "page") scrollbar.scrollTop += localCoords(target, true).y - pos.y;
+      setCursor(target.line, target.ch, true);
+      goalColumn = pos.x;
+    }
+
+    function findWordAt(pos) {
+      var line = getLine(pos.line).text;
+      var start = pos.ch, end = pos.ch;
+      if (line) {
+        if (pos.after === false || end == line.length) --start; else ++end;
+        var startChar = line.charAt(start);
+        var check = isWordChar(startChar) ? isWordChar :
+                    /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);} :
+                    function(ch) {return !/\s/.test(ch) && isWordChar(ch);};
+        while (start > 0 && check(line.charAt(start - 1))) --start;
+        while (end < line.length && check(line.charAt(end))) ++end;
+      }
+      return {from: {line: pos.line, ch: start}, to: {line: pos.line, ch: end}};
+    }
+    function selectLine(line) {
+      setSelectionUser({line: line, ch: 0}, clipPos({line: line + 1, ch: 0}));
+    }
+    function indentSelected(mode) {
+      if (posEq(sel.from, sel.to)) return indentLine(sel.from.line, mode);
+      var e = sel.to.line - (sel.to.ch ? 0 : 1);
+      for (var i = sel.from.line; i <= e; ++i) indentLine(i, mode);
+    }
+
+    function indentLine(n, how) {
+      if (!how) how = "add";
+      if (how == "smart") {
+        if (!mode.indent) how = "prev";
+        else var state = getStateBefore(n);
+      }
+
+      var line = getLine(n), curSpace = line.indentation(options.tabSize),
+          curSpaceString = line.text.match(/^\s*/)[0], indentation;
+      if (how == "smart") {
+        indentation = mode.indent(state, line.text.slice(curSpaceString.length), line.text);
+        if (indentation == Pass) how = "prev";
+      }
+      if (how == "prev") {
+        if (n) indentation = getLine(n-1).indentation(options.tabSize);
+        else indentation = 0;
+      }
+      else if (how == "add") indentation = curSpace + options.indentUnit;
+      else if (how == "subtract") indentation = curSpace - options.indentUnit;
+      indentation = Math.max(0, indentation);
+      var diff = indentation - curSpace;
+
+      var indentString = "", pos = 0;
+      if (options.indentWithTabs)
+        for (var i = Math.floor(indentation / options.tabSize); i; --i) {pos += options.tabSize; indentString += "\t";}
+      if (pos < indentation) indentString += spaceStr(indentation - pos);
+
+      if (indentString != curSpaceString)
+        replaceRange(indentString, {line: n, ch: 0}, {line: n, ch: curSpaceString.length});
+      line.stateAfter = null;
+    }
+
+    function loadMode() {
+      mode = CodeMirror.getMode(options, options.mode);
+      doc.iter(0, doc.size, function(line) { line.stateAfter = null; });
+      frontier = 0;
+      startWorker(100);
+    }
+    function gutterChanged() {
+      var visible = options.gutter || options.lineNumbers;
+      gutter.style.display = visible ? "" : "none";
+      if (visible) gutterDirty = true;
+      else lineDiv.parentNode.style.marginLeft = 0;
+    }
+    function wrappingChanged(from, to) {
+      if (options.lineWrapping) {
+        wrapper.className += " CodeMirror-wrap";
+        var perLine = scroller.clientWidth / charWidth() - 3;
+        doc.iter(0, doc.size, function(line) {
+          if (line.hidden) return;
+          var guess = Math.ceil(line.text.length / perLine) || 1;
+          if (guess != 1) updateLineHeight(line, guess);
+        });
+        lineSpace.style.minWidth = widthForcer.style.left = "";
+      } else {
+        wrapper.className = wrapper.className.replace(" CodeMirror-wrap", "");
+        computeMaxLength();
+        doc.iter(0, doc.size, function(line) {
+          if (line.height != 1 && !line.hidden) updateLineHeight(line, 1);
+        });
+      }
+      changes.push({from: 0, to: doc.size});
+    }
+    function themeChanged() {
+      scroller.className = scroller.className.replace(/\s*cm-s-\S+/g, "") +
+        options.theme.replace(/(^|\s)\s*/g, " cm-s-");
+    }
+    function keyMapChanged() {
+      var style = keyMap[options.keyMap].style;
+      wrapper.className = wrapper.className.replace(/\s*cm-keymap-\S+/g, "") +
+        (style ? " cm-keymap-" + style : "");
+    }
+
+    function TextMarker(type, style) { this.lines = []; this.type = type; if (style) this.style = style; }
+    TextMarker.prototype.clear = operation(function() {
+      var min, max;
+      for (var i = 0; i < this.lines.length; ++i) {
+        var line = this.lines[i];
+        var span = getMarkedSpanFor(line.markedSpans, this);
+        if (span.from != null) min = lineNo(line);
+        if (span.to != null) max = lineNo(line);
+        line.markedSpans = removeMarkedSpan(line.markedSpans, span);
+      }
+      if (min != null) changes.push({from: min, to: max + 1});
+      this.lines.length = 0;
+      this.explicitlyCleared = true;
+    });
+    TextMarker.prototype.find = function() {
+      var from, to;
+      for (var i = 0; i < this.lines.length; ++i) {
+        var line = this.lines[i];
+        var span = getMarkedSpanFor(line.markedSpans, this);
+        if (span.from != null || span.to != null) {
+          var found = lineNo(line);
+          if (span.from != null) from = {line: found, ch: span.from};
+          if (span.to != null) to = {line: found, ch: span.to};
+        }
+      }
+      if (this.type == "bookmark") return from;
+      return from && {from: from, to: to};
+    };
+
+    function markText(from, to, className, options) {
+      from = clipPos(from); to = clipPos(to);
+      var marker = new TextMarker("range", className);
+      if (options) for (var opt in options) if (options.hasOwnProperty(opt))
+        marker[opt] = options[opt];
+      var curLine = from.line;
+      doc.iter(curLine, to.line + 1, function(line) {
+        var span = {from: curLine == from.line ? from.ch : null,
+                    to: curLine == to.line ? to.ch : null,
+                    marker: marker};
+        line.markedSpans = (line.markedSpans || []).concat([span]);
+        marker.lines.push(line);
+        ++curLine;
+      });
+      changes.push({from: from.line, to: to.line + 1});
+      return marker;
+    }
+
+    function setBookmark(pos) {
+      pos = clipPos(pos);
+      var marker = new TextMarker("bookmark"), line = getLine(pos.line);
+      history.addChange(pos.line, 1, [newHL(line.text, line.markedSpans)], true);
+      var span = {from: pos.ch, to: pos.ch, marker: marker};
+      line.markedSpans = (line.markedSpans || []).concat([span]);
+      marker.lines.push(line);
+      return marker;
+    }
+
+    function findMarksAt(pos) {
+      pos = clipPos(pos);
+      var markers = [], spans = getLine(pos.line).markedSpans;
+      if (spans) for (var i = 0; i < spans.length; ++i) {
+        var span = spans[i];
+        if ((span.from == null || span.from <= pos.ch) &&
+            (span.to == null || span.to >= pos.ch))
+          markers.push(span.marker);
+      }
+      return markers;
+    }
+
+    function addGutterMarker(line, text, className) {
+      if (typeof line == "number") line = getLine(clipLine(line));
+      line.gutterMarker = {text: text, style: className};
+      gutterDirty = true;
+      return line;
+    }
+    function removeGutterMarker(line) {
+      if (typeof line == "number") line = getLine(clipLine(line));
+      line.gutterMarker = null;
+      gutterDirty = true;
+    }
+
+    function changeLine(handle, op) {
+      var no = handle, line = handle;
+      if (typeof handle == "number") line = getLine(clipLine(handle));
+      else no = lineNo(handle);
+      if (no == null) return null;
+      if (op(line, no)) changes.push({from: no, to: no + 1});
+      else return null;
+      return line;
+    }
+    function setLineClass(handle, className, bgClassName) {
+      return changeLine(handle, function(line) {
+        if (line.className != className || line.bgClassName != bgClassName) {
+          line.className = className;
+          line.bgClassName = bgClassName;
+          return true;
+        }
+      });
+    }
+    function setLineHidden(handle, hidden) {
+      return changeLine(handle, function(line, no) {
+        if (line.hidden != hidden) {
+          line.hidden = hidden;
+          if (!options.lineWrapping) {
+            if (hidden && line.text.length == maxLine.text.length) {
+              updateMaxLine = true;
+            } else if (!hidden && line.text.length > maxLine.text.length) {
+              maxLine = line; updateMaxLine = false;
+            }
+          }
+          updateLineHeight(line, hidden ? 0 : 1);
+          var fline = sel.from.line, tline = sel.to.line;
+          if (hidden && (fline == no || tline == no)) {
+            var from = fline == no ? skipHidden({line: fline, ch: 0}, fline, 0) : sel.from;
+            var to = tline == no ? skipHidden({line: tline, ch: 0}, tline, 0) : sel.to;
+            // Can't hide the last visible line, we'd have no place to put the cursor
+            if (!to) return;
+            setSelection(from, to);
+          }
+          return (gutterDirty = true);
+        }
+      });
+    }
+
+    function lineInfo(line) {
+      if (typeof line == "number") {
+        if (!isLine(line)) return null;
+        var n = line;
+        line = getLine(line);
+        if (!line) return null;
+      } else {
+        var n = lineNo(line);
+        if (n == null) return null;
+      }
+      var marker = line.gutterMarker;
+      return {line: n, handle: line, text: line.text, markerText: marker && marker.text,
+              markerClass: marker && marker.style, lineClass: line.className, bgClass: line.bgClassName};
+    }
+
+    function measureLine(line, ch) {
+      if (ch == 0) return {top: 0, left: 0};
+      var pre = lineContent(line, ch);
+      removeChildrenAndAdd(measure, pre);
+      var anchor = pre.anchor;
+      var top = anchor.offsetTop, left = anchor.offsetLeft;
+      // Older IEs report zero offsets for spans directly after a wrap
+      if (ie && top == 0 && left == 0) {
+        var backup = elt("span", "x");
+        anchor.parentNode.insertBefore(backup, anchor.nextSibling);
+        top = backup.offsetTop;
+      }
+      return {top: top, left: left};
+    }
+    function localCoords(pos, inLineWrap) {
+      var x, lh = textHeight(), y = lh * (heightAtLine(doc, pos.line) - (inLineWrap ? displayOffset : 0));
+      if (pos.ch == 0) x = 0;
+      else {
+        var sp = measureLine(getLine(pos.line), pos.ch);
+        x = sp.left;
+        if (options.lineWrapping) y += Math.max(0, sp.top);
+      }
+      return {x: x, y: y, yBot: y + lh};
+    }
+    // Coords must be lineSpace-local
+    function coordsChar(x, y) {
+      var th = textHeight(), cw = charWidth(), heightPos = displayOffset + Math.floor(y / th);
+      if (heightPos < 0) return {line: 0, ch: 0};
+      var lineNo = lineAtHeight(doc, heightPos);
+      if (lineNo >= doc.size) return {line: doc.size - 1, ch: getLine(doc.size - 1).text.length};
+      var lineObj = getLine(lineNo), text = lineObj.text;
+      var tw = options.lineWrapping, innerOff = tw ? heightPos - heightAtLine(doc, lineNo) : 0;
+      if (x <= 0 && innerOff == 0) return {line: lineNo, ch: 0};
+      var wrongLine = false;
+      function getX(len) {
+        var sp = measureLine(lineObj, len);
+        if (tw) {
+          var off = Math.round(sp.top / th);
+          wrongLine = off != innerOff;
+          return Math.max(0, sp.left + (off - innerOff) * scroller.clientWidth);
+        }
+        return sp.left;
+      }
+      var from = 0, fromX = 0, to = text.length, toX;
+      // Guess a suitable upper bound for our search.
+      var estimated = Math.min(to, Math.ceil((x + innerOff * scroller.clientWidth * .9) / cw));
+      for (;;) {
+        var estX = getX(estimated);
+        if (estX <= x && estimated < to) estimated = Math.min(to, Math.ceil(estimated * 1.2));
+        else {toX = estX; to = estimated; break;}
+      }
+      if (x > toX) return {line: lineNo, ch: to};
+      // Try to guess a suitable lower bound as well.
+      estimated = Math.floor(to * 0.8); estX = getX(estimated);
+      if (estX < x) {from = estimated; fromX = estX;}
+      // Do a binary search between these bounds.
+      for (;;) {
+        if (to - from <= 1) {
+          var after = x - fromX < toX - x;
+          return {line: lineNo, ch: after ? from : to, after: after};
+        }
+        var middle = Math.ceil((from + to) / 2), middleX = getX(middle);
+        if (middleX > x) {to = middle; toX = middleX; if (wrongLine) toX += 1000; }
+        else {from = middle; fromX = middleX;}
+      }
+    }
+    function pageCoords(pos) {
+      var local = localCoords(pos, true), off = eltOffset(lineSpace);
+      return {x: off.left + local.x, y: off.top + local.y, yBot: off.top + local.yBot};
+    }
+
+    var cachedHeight, cachedHeightFor, measurePre;
+    function textHeight() {
+      if (measurePre == null) {
+        measurePre = elt("pre");
+        for (var i = 0; i < 49; ++i) {
+          measurePre.appendChild(document.createTextNode("x"));
+          measurePre.appendChild(elt("br"));
+        }
+        measurePre.appendChild(document.createTextNode("x"));
+      }
+      var offsetHeight = lineDiv.clientHeight;
+      if (offsetHeight == cachedHeightFor) return cachedHeight;
+      cachedHeightFor = offsetHeight;
+      removeChildrenAndAdd(measure, measurePre.cloneNode(true));
+      cachedHeight = measure.firstChild.offsetHeight / 50 || 1;
+      removeChildren(measure);
+      return cachedHeight;
+    }
+    var cachedWidth, cachedWidthFor = 0;
+    function charWidth() {
+      if (scroller.clientWidth == cachedWidthFor) return cachedWidth;
+      cachedWidthFor = scroller.clientWidth;
+      var anchor = elt("span", "x");
+      var pre = elt("pre", [anchor]);
+      removeChildrenAndAdd(measure, pre);
+      return (cachedWidth = anchor.offsetWidth || 10);
+    }
+    function paddingTop() {return lineSpace.offsetTop;}
+    function paddingLeft() {return lineSpace.offsetLeft;}
+
+    function posFromMouse(e, liberal) {
+      var offW = eltOffset(scroller, true), x, y;
+      // Fails unpredictably on IE[67] when mouse is dragged around quickly.
+      try { x = e.clientX; y = e.clientY; } catch (e) { return null; }
+      // This is a mess of a heuristic to try and determine whether a
+      // scroll-bar was clicked or not, and to return null if one was
+      // (and !liberal).
+      if (!liberal && (x - offW.left > scroller.clientWidth || y - offW.top > scroller.clientHeight))
+        return null;
+      var offL = eltOffset(lineSpace, true);
+      return coordsChar(x - offL.left, y - offL.top);
+    }
+    var detectingSelectAll;
+    function onContextMenu(e) {
+      var pos = posFromMouse(e), scrollPos = scrollbar.scrollTop;
+      if (!pos || opera) return; // Opera is difficult.
+      if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to))
+        operation(setCursor)(pos.line, pos.ch);
+
+      var oldCSS = input.style.cssText;
+      inputDiv.style.position = "absolute";
+      input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
+        "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; " +
+        "border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
+      focusInput();
+      resetInput(true);
+      // Adds "Select all" to context menu in FF
+      if (posEq(sel.from, sel.to)) input.value = prevInput = " ";
+
+      function rehide() {
+        inputDiv.style.position = "relative";
+        input.style.cssText = oldCSS;
+        if (ie_lt9) scrollbar.scrollTop = scrollPos;
+        slowPoll();
+
+        // Try to detect the user choosing select-all 
+        if (input.selectionStart != null) {
+          clearTimeout(detectingSelectAll);
+          var extval = input.value = " " + (posEq(sel.from, sel.to) ? "" : input.value), i = 0;
+          prevInput = " ";
+          input.selectionStart = 1; input.selectionEnd = extval.length;
+          detectingSelectAll = setTimeout(function poll(){
+            if (prevInput == " " && input.selectionStart == 0)
+              operation(commands.selectAll)(instance);
+            else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500);
+            else resetInput();
+          }, 200);
+        }
+      }
+
+      if (gecko) {
+        e_stop(e);
+        var mouseup = connect(window, "mouseup", function() {
+          mouseup();
+          setTimeout(rehide, 20);
+        }, true);
+      } else {
+        setTimeout(rehide, 50);
+      }
+    }
+
+    // Cursor-blinking
+    function restartBlink() {
+      clearInterval(blinker);
+      var on = true;
+      cursor.style.visibility = "";
+      blinker = setInterval(function() {
+        cursor.style.visibility = (on = !on) ? "" : "hidden";
+      }, options.cursorBlinkRate);
+    }
+
+    var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<"};
+    function matchBrackets(autoclear) {
+      var head = sel.inverted ? sel.from : sel.to, line = getLine(head.line), pos = head.ch - 1;
+      var match = (pos >= 0 && matching[line.text.charAt(pos)]) || matching[line.text.charAt(++pos)];
+      if (!match) return;
+      var ch = match.charAt(0), forward = match.charAt(1) == ">", d = forward ? 1 : -1, st = line.styles;
+      for (var off = pos + 1, i = 0, e = st.length; i < e; i+=2)
+        if ((off -= st[i].length) <= 0) {var style = st[i+1]; break;}
+
+      var stack = [line.text.charAt(pos)], re = /[(){}[\]]/;
+      function scan(line, from, to) {
+        if (!line.text) return;
+        var st = line.styles, pos = forward ? 0 : line.text.length - 1, cur;
+        for (var i = forward ? 0 : st.length - 2, e = forward ? st.length : -2; i != e; i += 2*d) {
+          var text = st[i];
+          if (st[i+1] != style) {pos += d * text.length; continue;}
+          for (var j = forward ? 0 : text.length - 1, te = forward ? text.length : -1; j != te; j += d, pos+=d) {
+            if (pos >= from && pos < to && re.test(cur = text.charAt(j))) {
+              var match = matching[cur];
+              if (match.charAt(1) == ">" == forward) stack.push(cur);
+              else if (stack.pop() != match.charAt(0)) return {pos: pos, match: false};
+              else if (!stack.length) return {pos: pos, match: true};
+            }
+          }
+        }
+      }
+      for (var i = head.line, e = forward ? Math.min(i + 100, doc.size) : Math.max(-1, i - 100); i != e; i+=d) {
+        var line = getLine(i), first = i == head.line;
+        var found = scan(line, first && forward ? pos + 1 : 0, first && !forward ? pos : line.text.length);
+        if (found) break;
+      }
+      if (!found) found = {pos: null, match: false};
+      var style = found.match ? "CodeMirror-matchingbracket" : "CodeMirror-nonmatchingbracket";
+      var one = markText({line: head.line, ch: pos}, {line: head.line, ch: pos+1}, style),
+          two = found.pos != null && markText({line: i, ch: found.pos}, {line: i, ch: found.pos + 1}, style);
+      var clear = operation(function(){one.clear(); two && two.clear();});
+      if (autoclear) setTimeout(clear, 800);
+      else bracketHighlighted = clear;
+    }
+
+    // Finds the line to start with when starting a parse. Tries to
+    // find a line with a stateAfter, so that it can start with a
+    // valid state. If that fails, it returns the line with the
+    // smallest indentation, which tends to need the least context to
+    // parse correctly.
+    function findStartLine(n) {
+      var minindent, minline;
+      for (var search = n, lim = n - 40; search > lim; --search) {
+        if (search == 0) return 0;
+        var line = getLine(search-1);
+        if (line.stateAfter) return search;
+        var indented = line.indentation(options.tabSize);
+        if (minline == null || minindent > indented) {
+          minline = search - 1;
+          minindent = indented;
+        }
+      }
+      return minline;
+    }
+    function getStateBefore(n) {
+      var pos = findStartLine(n), state = pos && getLine(pos-1).stateAfter;
+      if (!state) state = startState(mode);
+      else state = copyState(mode, state);
+      doc.iter(pos, n, function(line) {
+        line.process(mode, state, options.tabSize);
+        line.stateAfter = (pos == n - 1 || pos % 5 == 0) ? copyState(mode, state) : null;
+      });
+      return state;
+    }
+    function highlightWorker() {
+      if (frontier >= showingTo) return;
+      var end = +new Date + options.workTime, state = copyState(mode, getStateBefore(frontier));
+      var startFrontier = frontier;
+      doc.iter(frontier, showingTo, function(line) {
+        if (frontier >= showingFrom) { // Visible
+          line.highlight(mode, state, options.tabSize);
+          line.stateAfter = copyState(mode, state);
+        } else {
+          line.process(mode, state, options.tabSize);
+          line.stateAfter = frontier % 5 == 0 ? copyState(mode, state) : null;
+        }
+        ++frontier;
+        if (+new Date > end) {
+          startWorker(options.workDelay);
+          return true;
+        }
+      });
+      if (showingTo > startFrontier && frontier >= showingFrom)
+        operation(function() {changes.push({from: startFrontier, to: frontier});})();
+    }
+    function startWorker(time) {
+      if (frontier < showingTo)
+        highlight.set(time, highlightWorker);
+    }
+
+    // Operations are used to wrap changes in such a way that each
+    // change won't have to update the cursor and display (which would
+    // be awkward, slow, and error-prone), but instead updates are
+    // batched and then all combined and executed at once.
+    function startOperation() {
+      updateInput = userSelChange = textChanged = null;
+      changes = []; selectionChanged = false; callbacks = [];
+    }
+    function endOperation() {
+      if (updateMaxLine) computeMaxLength();
+      if (maxLineChanged && !options.lineWrapping) {
+        var cursorWidth = widthForcer.offsetWidth, left = measureLine(maxLine, maxLine.text.length).left;
+        if (!ie_lt8) {
+          widthForcer.style.left = left + "px";
+          lineSpace.style.minWidth = (left + cursorWidth) + "px";
+        }
+        maxLineChanged = false;
+      }
+      var newScrollPos, updated;
+      if (selectionChanged) {
+        var coords = calculateCursorCoords();
+        newScrollPos = calculateScrollPos(coords.x, coords.y, coords.x, coords.yBot);
+      }
+      if (changes.length || newScrollPos && newScrollPos.scrollTop != null)
+        updated = updateDisplay(changes, true, newScrollPos && newScrollPos.scrollTop);
+      if (!updated) {
+        if (selectionChanged) updateSelection();
+        if (gutterDirty) updateGutter();
+      }
+      if (newScrollPos) scrollCursorIntoView();
+      if (selectionChanged) restartBlink();
+
+      if (focused && (updateInput === true || (updateInput !== false && selectionChanged)))
+        resetInput(userSelChange);
+
+      if (selectionChanged && options.matchBrackets)
+        setTimeout(operation(function() {
+          if (bracketHighlighted) {bracketHighlighted(); bracketHighlighted = null;}
+          if (posEq(sel.from, sel.to)) matchBrackets(false);
+        }), 20);
+      var sc = selectionChanged, cbs = callbacks; // these can be reset by callbacks
+      if (textChanged && options.onChange && instance)
+        options.onChange(instance, textChanged);
+      if (sc && options.onCursorActivity)
+        options.onCursorActivity(instance);
+      for (var i = 0; i < cbs.length; ++i) cbs[i](instance);
+      if (updated && options.onUpdate) options.onUpdate(instance);
+    }
+    var nestedOperation = 0;
+    function operation(f) {
+      return function() {
+        if (!nestedOperation++) startOperation();
+        try {var result = f.apply(this, arguments);}
+        finally {if (!--nestedOperation) endOperation();}
+        return result;
+      };
+    }
+
+    function compoundChange(f) {
+      history.startCompound();
+      try { return f(); } finally { history.endCompound(); }
+    }
+
+    for (var ext in extensions)
+      if (extensions.propertyIsEnumerable(ext) &&
+          !instance.propertyIsEnumerable(ext))
+        instance[ext] = extensions[ext];
+    for (var i = 0; i < initHooks.length; ++i) initHooks[i](instance);
+    return instance;
+  } // (end of function CodeMirror)
+
+  // The default configuration options.
+  CodeMirror.defaults = {
+    value: "",
+    mode: null,
+    theme: "default",
+    indentUnit: 2,
+    indentWithTabs: false,
+    smartIndent: true,
+    tabSize: 4,
+    keyMap: "default",
+    extraKeys: null,
+    electricChars: true,
+    autoClearEmptyLines: false,
+    onKeyEvent: null,
+    onDragEvent: null,
+    lineWrapping: false,
+    lineNumbers: false,
+    gutter: false,
+    fixedGutter: false,
+    firstLineNumber: 1,
+    showCursorWhenSelecting: false,
+    readOnly: false,
+    dragDrop: true,
+    onChange: null,
+    onCursorActivity: null,
+    onViewportChange: null,
+    onGutterClick: null,
+    onUpdate: null,
+    onFocus: null, onBlur: null, onScroll: null,
+    matchBrackets: false,
+    cursorBlinkRate: 530,
+    workTime: 100,
+    workDelay: 200,
+    pollInterval: 100,
+    undoDepth: 40,
+    tabindex: null,
+    autofocus: null,
+    lineNumberFormatter: function(integer) { return integer; }
+  };
+
+  var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
+  var mac = ios || /Mac/.test(navigator.platform);
+  var win = /Win/.test(navigator.platform);
+
+  // Known modes, by name and by MIME
+  var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};
+  CodeMirror.defineMode = function(name, mode) {
+    if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
+    if (arguments.length > 2) {
+      mode.dependencies = [];
+      for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]);
+    }
+    modes[name] = mode;
+  };
+  CodeMirror.defineMIME = function(mime, spec) {
+    mimeModes[mime] = spec;
+  };
+  CodeMirror.resolveMode = function(spec) {
+    if (typeof spec == "string" && mimeModes.hasOwnProperty(spec))
+      spec = mimeModes[spec];
+    else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec))
+      return CodeMirror.resolveMode("application/xml");
+    if (typeof spec == "string") return {name: spec};
+    else return spec || {name: "null"};
+  };
+  CodeMirror.getMode = function(options, spec) {
+    var spec = CodeMirror.resolveMode(spec);
+    var mfactory = modes[spec.name];
+    if (!mfactory) return CodeMirror.getMode(options, "text/plain");
+    var modeObj = mfactory(options, spec);
+    if (modeExtensions.hasOwnProperty(spec.name)) {
+      var exts = modeExtensions[spec.name];
+      for (var prop in exts) {
+        if (!exts.hasOwnProperty(prop)) continue;
+        if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop];
+        modeObj[prop] = exts[prop];
+      }
+    }
+    modeObj.name = spec.name;
+    return modeObj;
+  };
+  CodeMirror.listModes = function() {
+    var list = [];
+    for (var m in modes)
+      if (modes.propertyIsEnumerable(m)) list.push(m);
+    return list;
+  };
+  CodeMirror.listMIMEs = function() {
+    var list = [];
+    for (var m in mimeModes)
+      if (mimeModes.propertyIsEnumerable(m)) list.push({mime: m, mode: mimeModes[m]});
+    return list;
+  };
+
+  var extensions = CodeMirror.extensions = {};
+  CodeMirror.defineExtension = function(name, func) {
+    extensions[name] = func;
+  };
+
+  var initHooks = [];
+  CodeMirror.defineInitHook = function(f) {initHooks.push(f);};
+
+  var modeExtensions = CodeMirror.modeExtensions = {};
+  CodeMirror.extendMode = function(mode, properties) {
+    var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
+    for (var prop in properties) if (properties.hasOwnProperty(prop))
+      exts[prop] = properties[prop];
+  };
+
+  var commands = CodeMirror.commands = {
+    selectAll: function(cm) {cm.setSelection({line: 0, ch: 0}, {line: cm.lineCount() - 1});},
+    killLine: function(cm) {
+      var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to);
+      if (!sel && cm.getLine(from.line).length == from.ch) cm.replaceRange("", from, {line: from.line + 1, ch: 0});
+      else cm.replaceRange("", from, sel ? to : {line: from.line});
+    },
+    deleteLine: function(cm) {var l = cm.getCursor().line; cm.replaceRange("", {line: l, ch: 0}, {line: l});},
+    undo: function(cm) {cm.undo();},
+    redo: function(cm) {cm.redo();},
+    goDocStart: function(cm) {cm.setCursor(0, 0, true);},
+    goDocEnd: function(cm) {cm.setSelection({line: cm.lineCount() - 1}, null, true);},
+    goLineStart: function(cm) {cm.setCursor(cm.getCursor().line, 0, true);},
+    goLineStartSmart: function(cm) {
+      var cur = cm.getCursor();
+      var text = cm.getLine(cur.line), firstNonWS = Math.max(0, text.search(/\S/));
+      cm.setCursor(cur.line, cur.ch <= firstNonWS && cur.ch ? 0 : firstNonWS, true);
+    },
+    goLineEnd: function(cm) {cm.setSelection({line: cm.getCursor().line}, null, true);},
+    goLineUp: function(cm) {cm.moveV(-1, "line");},
+    goLineDown: function(cm) {cm.moveV(1, "line");},
+    goPageUp: function(cm) {cm.moveV(-1, "page");},
+    goPageDown: function(cm) {cm.moveV(1, "page");},
+    goCharLeft: function(cm) {cm.moveH(-1, "char");},
+    goCharRight: function(cm) {cm.moveH(1, "char");},
+    goColumnLeft: function(cm) {cm.moveH(-1, "column");},
+    goColumnRight: function(cm) {cm.moveH(1, "column");},
+    goWordLeft: function(cm) {cm.moveH(-1, "word");},
+    goWordRight: function(cm) {cm.moveH(1, "word");},
+    delCharLeft: function(cm) {cm.deleteH(-1, "char");},
+    delCharRight: function(cm) {cm.deleteH(1, "char");},
+    delWordLeft: function(cm) {cm.deleteH(-1, "word");},
+    delWordRight: function(cm) {cm.deleteH(1, "word");},
+    indentAuto: function(cm) {cm.indentSelection("smart");},
+    indentMore: function(cm) {cm.indentSelection("add");},
+    indentLess: function(cm) {cm.indentSelection("subtract");},
+    insertTab: function(cm) {cm.replaceSelection("\t", "end");},
+    defaultTab: function(cm) {
+      if (cm.somethingSelected()) cm.indentSelection("add");
+      else cm.replaceSelection("\t", "end");
+    },
+    transposeChars: function(cm) {
+      var cur = cm.getCursor(), line = cm.getLine(cur.line);
+      if (cur.ch > 0 && cur.ch < line.length - 1)
+        cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),
+                        {line: cur.line, ch: cur.ch - 1}, {line: cur.line, ch: cur.ch + 1});
+    },
+    newlineAndIndent: function(cm) {
+      cm.replaceSelection("\n", "end");
+      cm.indentLine(cm.getCursor().line);
+    },
+    toggleOverwrite: function(cm) {cm.toggleOverwrite();}
+  };
+
+  var keyMap = CodeMirror.keyMap = {};
+  keyMap.basic = {
+    "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
+    "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
+    "Delete": "delCharRight", "Backspace": "delCharLeft", "Tab": "defaultTab", "Shift-Tab": "indentAuto",
+    "Enter": "newlineAndIndent", "Insert": "toggleOverwrite"
+  };
+  // Note that the save and find-related commands aren't defined by
+  // default. Unknown commands are simply ignored.
+  keyMap.pcDefault = {
+    "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
+    "Ctrl-Home": "goDocStart", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd",
+    "Ctrl-Left": "goWordLeft", "Ctrl-Right": "goWordRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
+    "Ctrl-Backspace": "delWordLeft", "Ctrl-Delete": "delWordRight", "Ctrl-S": "save", "Ctrl-F": "find",
+    "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
+    "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
+    fallthrough: "basic"
+  };
+  keyMap.macDefault = {
+    "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
+    "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goWordLeft",
+    "Alt-Right": "goWordRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delWordLeft",
+    "Ctrl-Alt-Backspace": "delWordRight", "Alt-Delete": "delWordRight", "Cmd-S": "save", "Cmd-F": "find",
+    "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
+    "Cmd-[": "indentLess", "Cmd-]": "indentMore",
+    fallthrough: ["basic", "emacsy"]
+  };
+  keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
+  keyMap.emacsy = {
+    "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
+    "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
+    "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharRight", "Ctrl-H": "delCharLeft",
+    "Alt-D": "delWordRight", "Alt-Backspace": "delWordLeft", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
+  };
+
+  function getKeyMap(val) {
+    if (typeof val == "string") return keyMap[val];
+    else return val;
+  }
+  function lookupKey(name, extraMap, map, handle, stop) {
+    function lookup(map) {
+      map = getKeyMap(map);
+      var found = map[name];
+      if (found === false) {
+        if (stop) stop();
+        return true;
+      }
+      if (found != null && handle(found)) return true;
+      if (map.nofallthrough) {
+        if (stop) stop();
+        return true;
+      }
+      var fallthrough = map.fallthrough;
+      if (fallthrough == null) return false;
+      if (Object.prototype.toString.call(fallthrough) != "[object Array]")
+        return lookup(fallthrough);
+      for (var i = 0, e = fallthrough.length; i < e; ++i) {
+        if (lookup(fallthrough[i])) return true;
+      }
+      return false;
+    }
+    if (extraMap && lookup(extraMap)) return true;
+    return lookup(map);
+  }
+  function isModifierKey(event) {
+    var name = keyNames[e_prop(event, "keyCode")];
+    return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
+  }
+  CodeMirror.isModifierKey = isModifierKey;
+
+  CodeMirror.fromTextArea = function(textarea, options) {
+    if (!options) options = {};
+    options.value = textarea.value;
+    if (!options.tabindex && textarea.tabindex)
+      options.tabindex = textarea.tabindex;
+    // Set autofocus to true if this textarea is focused, or if it has
+    // autofocus and no other element is focused.
+    if (options.autofocus == null) {
+      var hasFocus = document.body;
+      // doc.activeElement occasionally throws on IE
+      try { hasFocus = document.activeElement; } catch(e) {}
+      options.autofocus = hasFocus == textarea ||
+        textarea.getAttribute("autofocus") != null && hasFocus == document.body;
+    }
+
+    function save() {textarea.value = instance.getValue();}
+    if (textarea.form) {
+      // Deplorable hack to make the submit method do the right thing.
+      var rmSubmit = connect(textarea.form, "submit", save, true);
+      var form = textarea.form, realSubmit = form.submit;
+      textarea.form.submit = function wrappedSubmit() {
+        save();
+        form.submit = realSubmit;
+        form.submit();
+        form.submit = wrappedSubmit;
+      };
+    }
+
+    textarea.style.display = "none";
+    var instance = CodeMirror(function(node) {
+      textarea.parentNode.insertBefore(node, textarea.nextSibling);
+    }, options);
+    instance.save = save;
+    instance.getTextArea = function() { return textarea; };
+    instance.toTextArea = function() {
+      save();
+      textarea.parentNode.removeChild(instance.getWrapperElement());
+      textarea.style.display = "";
+      if (textarea.form) {
+        rmSubmit();
+        if (typeof textarea.form.submit == "function")
+          textarea.form.submit = realSubmit;
+      }
+    };
+    return instance;
+  };
+
+  var gecko = /gecko\/\d/i.test(navigator.userAgent);
+  var ie = /MSIE \d/.test(navigator.userAgent);
+  var ie_lt8 = /MSIE [1-7]\b/.test(navigator.userAgent);
+  var ie_lt9 = /MSIE [1-8]\b/.test(navigator.userAgent);
+  var quirksMode = ie && document.documentMode == 5;
+  var webkit = /WebKit\//.test(navigator.userAgent);
+  var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent);
+  var chrome = /Chrome\//.test(navigator.userAgent);
+  var opera = /Opera\//.test(navigator.userAgent);
+  var safari = /Apple Computer/.test(navigator.vendor);
+  var khtml = /KHTML\//.test(navigator.userAgent);
+  var mac_geLion = /Mac OS X 10\D([7-9]|\d\d)\D/.test(navigator.userAgent);
+
+  var opera_version = opera && navigator.userAgent.match(/Version\/(\d*\.\d*)/);
+  if (opera_version) opera_version = Number(opera_version[1]);
+  // Some browsers use the wrong event properties to signal cmd/ctrl on OS X
+  var flipCtrlCmd = mac && (qtwebkit || opera && (opera_version == null || opera_version < 12.11));
+
+  // Utility functions for working with state. Exported because modes
+  // sometimes need to do this.
+  function copyState(mode, state) {
+    if (state === true) return state;
+    if (mode.copyState) return mode.copyState(state);
+    var nstate = {};
+    for (var n in state) {
+      var val = state[n];
+      if (val instanceof Array) val = val.concat([]);
+      nstate[n] = val;
+    }
+    return nstate;
+  }
+  CodeMirror.copyState = copyState;
+  function startState(mode, a1, a2) {
+    return mode.startState ? mode.startState(a1, a2) : true;
+  }
+  CodeMirror.startState = startState;
+  CodeMirror.innerMode = function(mode, state) {
+    while (mode.innerMode) {
+      var info = mode.innerMode(state);
+      state = info.state;
+      mode = info.mode;
+    }
+    return info || {mode: mode, state: state};
+  };
+
+  // The character stream used by a mode's parser.
+  function StringStream(string, tabSize) {
+    this.pos = this.start = 0;
+    this.string = string;
+    this.tabSize = tabSize || 8;
+  }
+  StringStream.prototype = {
+    eol: function() {return this.pos >= this.string.length;},
+    sol: function() {return this.pos == 0;},
+    peek: function() {return this.string.charAt(this.pos) || undefined;},
+    next: function() {
+      if (this.pos < this.string.length)
+        return this.string.charAt(this.pos++);
+    },
+    eat: function(match) {
+      var ch = this.string.charAt(this.pos);
+      if (typeof match == "string") var ok = ch == match;
+      else var ok = ch && (match.test ? match.test(ch) : match(ch));
+      if (ok) {++this.pos; return ch;}
+    },
+    eatWhile: function(match) {
+      var start = this.pos;
+      while (this.eat(match)){}
+      return this.pos > start;
+    },
+    eatSpace: function() {
+      var start = this.pos;
+      while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
+      return this.pos > start;
+    },
+    skipToEnd: function() {this.pos = this.string.length;},
+    skipTo: function(ch) {
+      var found = this.string.indexOf(ch, this.pos);
+      if (found > -1) {this.pos = found; return true;}
+    },
+    backUp: function(n) {this.pos -= n;},
+    column: function() {return countColumn(this.string, this.start, this.tabSize);},
+    indentation: function() {return countColumn(this.string, null, this.tabSize);},
+    match: function(pattern, consume, caseInsensitive) {
+      if (typeof pattern == "string") {
+        var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
+        if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) {
+          if (consume !== false) this.pos += pattern.length;
+          return true;
+        }
+      } else {
+        var match = this.string.slice(this.pos).match(pattern);
+        if (match && match.index > 0) return null;
+        if (match && consume !== false) this.pos += match[0].length;
+        return match;
+      }
+    },
+    current: function(){return this.string.slice(this.start, this.pos);}
+  };
+  CodeMirror.StringStream = StringStream;
+
+  function MarkedSpan(from, to, marker) {
+    this.from = from; this.to = to; this.marker = marker;
+  }
+
+  function getMarkedSpanFor(spans, marker) {
+    if (spans) for (var i = 0; i < spans.length; ++i) {
+      var span = spans[i];
+      if (span.marker == marker) return span;
+    }
+  }
+
+  function removeMarkedSpan(spans, span) {
+    var r;
+    for (var i = 0; i < spans.length; ++i)
+      if (spans[i] != span) (r || (r = [])).push(spans[i]);
+    return r;
+  }
+
+  function markedSpansBefore(old, startCh, endCh) {
+    if (old) for (var i = 0, nw; i < old.length; ++i) {
+      var span = old[i], marker = span.marker;
+      var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
+      if (startsBefore || marker.type == "bookmark" && span.from == startCh && span.from != endCh) {
+        var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);
+        (nw || (nw = [])).push({from: span.from,
+                                to: endsAfter ? null : span.to,
+                                marker: marker});
+      }
+    }
+    return nw;
+  }
+
+  function markedSpansAfter(old, endCh) {
+    if (old) for (var i = 0, nw; i < old.length; ++i) {
+      var span = old[i], marker = span.marker;
+      var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
+      if (endsAfter || marker.type == "bookmark" && span.from == endCh) {
+        var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);
+        (nw || (nw = [])).push({from: startsBefore ? null : span.from - endCh,
+                                to: span.to == null ? null : span.to - endCh,
+                                marker: marker});
+      }
+    }
+    return nw;
+  }
+
+  function updateMarkedSpans(oldFirst, oldLast, startCh, endCh, newText) {
+    if (!oldFirst && !oldLast) return newText;
+    // Get the spans that 'stick out' on both sides
+    var first = markedSpansBefore(oldFirst, startCh);
+    var last = markedSpansAfter(oldLast, endCh);
+
+    // Next, merge those two ends
+    var sameLine = newText.length == 1, offset = lst(newText).length + (sameLine ? startCh : 0);
+    if (first) {
+      // Fix up .to properties of first
+      for (var i = 0; i < first.length; ++i) {
+        var span = first[i];
+        if (span.to == null) {
+          var found = getMarkedSpanFor(last, span.marker);
+          if (!found) span.to = startCh;
+          else if (sameLine) span.to = found.to == null ? null : found.to + offset;
+        }
+      }
+    }
+    if (last) {
+      // Fix up .from in last (or move them into first in case of sameLine)
+      for (var i = 0; i < last.length; ++i) {
+        var span = last[i];
+        if (span.to != null) span.to += offset;
+        if (span.from == null) {
+          var found = getMarkedSpanFor(first, span.marker);
+          if (!found) {
+            span.from = offset;
+            if (sameLine) (first || (first = [])).push(span);
+          }
+        } else {
+          span.from += offset;
+          if (sameLine) (first || (first = [])).push(span);
+        }
+      }
+    }
+
+    var newMarkers = [newHL(newText[0], first)];
+    if (!sameLine) {
+      // Fill gap with whole-line-spans
+      var gap = newText.length - 2, gapMarkers;
+      if (gap > 0 && first)
+        for (var i = 0; i < first.length; ++i)
+          if (first[i].to == null)
+            (gapMarkers || (gapMarkers = [])).push({from: null, to: null, marker: first[i].marker});
+      for (var i = 0; i < gap; ++i)
+        newMarkers.push(newHL(newText[i+1], gapMarkers));
+      newMarkers.push(newHL(lst(newText), last));
+    }
+    return newMarkers;
+  }
+
+  // hl stands for history-line, a data structure that can be either a
+  // string (line without markers) or a {text, markedSpans} object.
+  function hlText(val) { return typeof val == "string" ? val : val.text; }
+  function hlSpans(val) {
+    if (typeof val == "string") return null;
+    var spans = val.markedSpans, out = null;
+    for (var i = 0; i < spans.length; ++i) {
+      if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); }
+      else if (out) out.push(spans[i]);
+    }
+    return !out ? spans : out.length ? out : null;
+  }
+  function newHL(text, spans) { return spans ? {text: text, markedSpans: spans} : text; }
+
+  function detachMarkedSpans(line) {
+    var spans = line.markedSpans;
+    if (!spans) return;
+    for (var i = 0; i < spans.length; ++i) {
+      var lines = spans[i].marker.lines;
+      var ix = indexOf(lines, line);
+      lines.splice(ix, 1);
+    }
+    line.markedSpans = null;
+  }
+
+  function attachMarkedSpans(line, spans) {
+    if (!spans) return;
+    for (var i = 0; i < spans.length; ++i)
+      var marker = spans[i].marker.lines.push(line);
+    line.markedSpans = spans;
+  }
+
+  // When measuring the position of the end of a line, different
+  // browsers require different approaches. If an empty span is added,
+  // many browsers report bogus offsets. Of those, some (Webkit,
+  // recent IE) will accept a space without moving the whole span to
+  // the next line when wrapping it, others work with a zero-width
+  // space.
+  var eolSpanContent = " ";
+  if (gecko || (ie && !ie_lt8)) eolSpanContent = "\u200b";
+  else if (opera) eolSpanContent = "";
+
+  // Line objects. These hold state related to a line, including
+  // highlighting info (the styles array).
+  function Line(text, markedSpans) {
+    this.text = text;
+    this.height = 1;
+    attachMarkedSpans(this, markedSpans);
+  }
+  Line.prototype = {
+    update: function(text, markedSpans) {
+      this.text = text;
+      this.stateAfter = this.styles = null;
+      detachMarkedSpans(this);
+      attachMarkedSpans(this, markedSpans);
+    },
+    // Run the given mode's parser over a line, update the styles
+    // array, which contains alternating fragments of text and CSS
+    // classes.
+    highlight: function(mode, state, tabSize) {
+      var stream = new StringStream(this.text, tabSize), st = this.styles || (this.styles = []);
+      var pos = st.length = 0;
+      if (this.text == "" && mode.blankLine) mode.blankLine(state);
+      while (!stream.eol()) {
+        var style = mode.token(stream, state), substr = stream.current();
+        stream.start = stream.pos;
+        if (pos && st[pos-1] == style) {
+          st[pos-2] += substr;
+        } else if (substr) {
+          st[pos++] = substr; st[pos++] = style;
+        }
+        // Give up when line is ridiculously long
+        if (stream.pos > 5000) {
+          st[pos++] = this.text.slice(stream.pos); st[pos++] = null;
+          break;
+        }
+      }
+    },
+    process: function(mode, state, tabSize) {
+      var stream = new StringStream(this.text, tabSize);
+      if (this.text == "" && mode.blankLine) mode.blankLine(state);
+      while (!stream.eol() && stream.pos <= 5000) {
+        mode.token(stream, state);
+        stream.start = stream.pos;
+      }
+    },
+    // Fetch the parser token for a given character. Useful for hacks
+    // that want to inspect the mode state (say, for completion).
+    getTokenAt: function(mode, state, tabSize, ch) {
+      var txt = this.text, stream = new StringStream(txt, tabSize);
+      while (stream.pos < ch && !stream.eol()) {
+        stream.start = stream.pos;
+        var style = mode.token(stream, state);
+      }
+      return {start: stream.start,
+              end: stream.pos,
+              string: stream.current(),
+              className: style || null,
+              state: state};
+    },
+    indentation: function(tabSize) {return countColumn(this.text, null, tabSize);},
+    // Produces an HTML fragment for the line, taking selection,
+    // marking, and highlighting into account.
+    getContent: function(tabSize, wrapAt, compensateForWrapping) {
+      var first = true, col = 0, specials = /[\t\u0000-\u0019\u200b\u2028\u2029\uFEFF]/g;
+      var pre = elt("pre");
+      function span_(html, text, style) {
+        if (!text) return;
+        // Work around a bug where, in some compat modes, IE ignores leading spaces
+        if (first && ie && text.charAt(0) == " ") text = "\u00a0" + text.slice(1);
+        first = false;
+        if (!specials.test(text)) {
+          col += text.length;
+          var content = document.createTextNode(text);
+        } else {
+          var content = document.createDocumentFragment(), pos = 0;
+          while (true) {
+            specials.lastIndex = pos;
+            var m = specials.exec(text);
+            var skipped = m ? m.index - pos : text.length - pos;
+            if (skipped) {
+              content.appendChild(document.createTextNode(text.slice(pos, pos + skipped)));
+              col += skipped;
+            }
+            if (!m) break;
+            pos += skipped + 1;
+            if (m[0] == "\t") {
+              var tabWidth = tabSize - col % tabSize;
+              content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
+              col += tabWidth;
+            } else {
+              var token = elt("span", "\u2022", "cm-invalidchar");
+              token.title = "\\u" + m[0].charCodeAt(0).toString(16);
+              content.appendChild(token);
+              col += 1;
+            }
+          }
+        }
+        if (style) html.appendChild(elt("span", [content], style));
+        else html.appendChild(content);
+      }
+      var span = span_;
+      if (wrapAt != null) {
+        var outPos = 0, anchor = pre.anchor = elt("span");
+        span = function(html, text, style) {
+          var l = text.length;
+          if (wrapAt >= outPos && wrapAt < outPos + l) {
+            var cut = wrapAt - outPos;
+            if (cut) {
+              span_(html, text.slice(0, cut), style);
+              // See comment at the definition of spanAffectsWrapping
+              if (compensateForWrapping) {
+                var view = text.slice(cut - 1, cut + 1);
+                if (spanAffectsWrapping.test(view)) html.appendChild(elt("wbr"));
+                else if (!ie_lt8 && /\w\w/.test(view)) html.appendChild(document.createTextNode("\u200d"));
+              }
+            }
+            html.appendChild(anchor);
+            span_(anchor, opera ? text.slice(cut, cut + 1) : text.slice(cut), style);
+            if (opera) span_(html, text.slice(cut + 1), style);
+            wrapAt--;
+            outPos += l;
+          } else {
+            outPos += l;
+            span_(html, text, style);
+            if (outPos == wrapAt && outPos == len) {
+              setTextContent(anchor, eolSpanContent);
+              html.appendChild(anchor);
+            }
+            // Stop outputting HTML when gone sufficiently far beyond measure
+            else if (outPos > wrapAt + 10 && /\s/.test(text)) span = function(){};
+          }
+        };
+      }
+
+      var st = this.styles, allText = this.text, marked = this.markedSpans;
+      var len = allText.length;
+      function styleToClass(style) {
+        if (!style) return null;
+        return "cm-" + style.replace(/ +/g, " cm-");
+      }
+      if (!allText && wrapAt == null) {
+        span(pre, " ");
+      } else if (!marked || !marked.length) {
+        for (var i = 0, ch = 0; ch < len; i+=2) {
+          var str = st[i], style = st[i+1], l = str.length;
+          if (ch + l > len) str = str.slice(0, len - ch);
+          ch += l;
+          span(pre, str, styleToClass(style));
+        }
+      } else {
+        marked.sort(function(a, b) { return a.from - b.from; });
+        var pos = 0, i = 0, text = "", style, sg = 0;
+        var nextChange = marked[0].from || 0, marks = [], markpos = 0;
+        var advanceMarks = function() {
+          var m;
+          while (markpos < marked.length &&
+                 ((m = marked[markpos]).from == pos || m.from == null)) {
+            if (m.marker.type == "range") marks.push(m);
+            ++markpos;
+          }
+          nextChange = markpos < marked.length ? marked[markpos].from : Infinity;
+          for (var i = 0; i < marks.length; ++i) {
+            var to = marks[i].to;
+            if (to == null) to = Infinity;
+            if (to == pos) marks.splice(i--, 1);
+            else nextChange = Math.min(to, nextChange);
+          }
+        };
+        var m = 0;
+        while (pos < len) {
+          if (nextChange == pos) advanceMarks();
+          var upto = Math.min(len, nextChange);
+          while (true) {
+            if (text) {
+              var end = pos + text.length;
+              var appliedStyle = style;
+              for (var j = 0; j < marks.length; ++j) {
+                var mark = marks[j];
+                appliedStyle = (appliedStyle ? appliedStyle + " " : "") + mark.marker.style;
+                if (mark.marker.endStyle && mark.to === Math.min(end, upto)) appliedStyle += " " + mark.marker.endStyle;
+                if (mark.marker.startStyle && mark.from === pos) appliedStyle += " " + mark.marker.startStyle;
+              }
+              span(pre, end > upto ? text.slice(0, upto - pos) : text, appliedStyle);
+              if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
+              pos = end;
+            }
+            text = st[i++]; style = styleToClass(st[i++]);
+          }
+        }
+      }
+      return pre;
+    },
+    cleanUp: function() {
+      this.parent = null;
+      detachMarkedSpans(this);
+    }
+  };
+
+  // Data structure that holds the sequence of lines.
+  function LeafChunk(lines) {
+    this.lines = lines;
+    this.parent = null;
+    for (var i = 0, e = lines.length, height = 0; i < e; ++i) {
+      lines[i].parent = this;
+      height += lines[i].height;
+    }
+    this.height = height;
+  }
+  LeafChunk.prototype = {
+    chunkSize: function() { return this.lines.length; },
+    remove: function(at, n, callbacks) {
+      for (var i = at, e = at + n; i < e; ++i) {
+        var line = this.lines[i];
+        this.height -= line.height;
+        line.cleanUp();
+        if (line.handlers)
+          for (var j = 0; j < line.handlers.length; ++j) callbacks.push(line.handlers[j]);
+      }
+      this.lines.splice(at, n);
+    },
+    collapse: function(lines) {
+      lines.splice.apply(lines, [lines.length, 0].concat(this.lines));
+    },
+    insertHeight: function(at, lines, height) {
+      this.height += height;
+      this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
+      for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this;
+    },
+    iterN: function(at, n, op) {
+      for (var e = at + n; at < e; ++at)
+        if (op(this.lines[at])) return true;
+    }
+  };
+  function BranchChunk(children) {
+    this.children = children;
+    var size = 0, height = 0;
+    for (var i = 0, e = children.length; i < e; ++i) {
+      var ch = children[i];
+      size += ch.chunkSize(); height += ch.height;
+      ch.parent = this;
+    }
+    this.size = size;
+    this.height = height;
+    this.parent = null;
+  }
+  BranchChunk.prototype = {
+    chunkSize: function() { return this.size; },
+    remove: function(at, n, callbacks) {
+      this.size -= n;
+      for (var i = 0; i < this.children.length; ++i) {
+        var child = this.children[i], sz = child.chunkSize();
+        if (at < sz) {
+          var rm = Math.min(n, sz - at), oldHeight = child.height;
+          child.remove(at, rm, callbacks);
+          this.height -= oldHeight - child.height;
+          if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
+          if ((n -= rm) == 0) break;
+          at = 0;
+        } else at -= sz;
+      }
+      if (this.size - n < 25) {
+        var lines = [];
+        this.collapse(lines);
+        this.children = [new LeafChunk(lines)];
+        this.children[0].parent = this;
+      }
+    },
+    collapse: function(lines) {
+      for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines);
+    },
+    insert: function(at, lines) {
+      var height = 0;
+      for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height;
+      this.insertHeight(at, lines, height);
+    },
+    insertHeight: function(at, lines, height) {
+      this.size += lines.length;
+      this.height += height;
+      for (var i = 0, e = this.children.length; i < e; ++i) {
+        var child = this.children[i], sz = child.chunkSize();
+        if (at <= sz) {
+          child.insertHeight(at, lines, height);
+          if (child.lines && child.lines.length > 50) {
+            while (child.lines.length > 50) {
+              var spilled = child.lines.splice(child.lines.length - 25, 25);
+              var newleaf = new LeafChunk(spilled);
+              child.height -= newleaf.height;
+              this.children.splice(i + 1, 0, newleaf);
+              newleaf.parent = this;
+            }
+            this.maybeSpill();
+          }
+          break;
+        }
+        at -= sz;
+      }
+    },
+    maybeSpill: function() {
+      if (this.children.length <= 10) return;
+      var me = this;
+      do {
+        var spilled = me.children.splice(me.children.length - 5, 5);
+        var sibling = new BranchChunk(spilled);
+        if (!me.parent) { // Become the parent node
+          var copy = new BranchChunk(me.children);
+          copy.parent = me;
+          me.children = [copy, sibling];
+          me = copy;
+        } else {
+          me.size -= sibling.size;
+          me.height -= sibling.height;
+          var myIndex = indexOf(me.parent.children, me);
+          me.parent.children.splice(myIndex + 1, 0, sibling);
+        }
+        sibling.parent = me.parent;
+      } while (me.children.length > 10);
+      me.parent.maybeSpill();
+    },
+    iter: function(from, to, op) { this.iterN(from, to - from, op); },
+    iterN: function(at, n, op) {
+      for (var i = 0, e = this.children.length; i < e; ++i) {
+        var child = this.children[i], sz = child.chunkSize();
+        if (at < sz) {
+          var used = Math.min(n, sz - at);
+          if (child.iterN(at, used, op)) return true;
+          if ((n -= used) == 0) break;
+          at = 0;
+        } else at -= sz;
+      }
+    }
+  };
+
+  function getLineAt(chunk, n) {
+    while (!chunk.lines) {
+      for (var i = 0;; ++i) {
+        var child = chunk.children[i], sz = child.chunkSize();
+        if (n < sz) { chunk = child; break; }
+        n -= sz;
+      }
+    }
+    return chunk.lines[n];
+  }
+  function lineNo(line) {
+    if (line.parent == null) return null;
+    var cur = line.parent, no = indexOf(cur.lines, line);
+    for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
+      for (var i = 0; ; ++i) {
+        if (chunk.children[i] == cur) break;
+        no += chunk.children[i].chunkSize();
+      }
+    }
+    return no;
+  }
+  function lineAtHeight(chunk, h) {
+    var n = 0;
+    outer: do {
+      for (var i = 0, e = chunk.children.length; i < e; ++i) {
+        var child = chunk.children[i], ch = child.height;
+        if (h < ch) { chunk = child; continue outer; }
+        h -= ch;
+        n += child.chunkSize();
+      }
+      return n;
+    } while (!chunk.lines);
+    for (var i = 0, e = chunk.lines.length; i < e; ++i) {
+      var line = chunk.lines[i], lh = line.height;
+      if (h < lh) break;
+      h -= lh;
+    }
+    return n + i;
+  }
+  function heightAtLine(chunk, n) {
+    var h = 0;
+    outer: do {
+      for (var i = 0, e = chunk.children.length; i < e; ++i) {
+        var child = chunk.children[i], sz = child.chunkSize();
+        if (n < sz) { chunk = child; continue outer; }
+        n -= sz;
+        h += child.height;
+      }
+      return h;
+    } while (!chunk.lines);
+    for (var i = 0; i < n; ++i) h += chunk.lines[i].height;
+    return h;
+  }
+
+  // The history object 'chunks' changes that are made close together
+  // and at almost the same time into bigger undoable units.
+  function History() {
+    this.time = 0;
+    this.done = []; this.undone = [];
+    this.compound = 0;
+    this.closed = false;
+  }
+  History.prototype = {
+    addChange: function(start, added, old) {
+      this.undone.length = 0;
+      var time = +new Date, cur = lst(this.done), last = cur && lst(cur);
+      var dtime = time - this.time;
+
+      if (cur && !this.closed && this.compound) {
+        cur.push({start: start, added: added, old: old});
+      } else if (dtime > 400 || !last || this.closed ||
+                 last.start > start + old.length || last.start + last.added < start) {
+        this.done.push([{start: start, added: added, old: old}]);
+        this.closed = false;
+      } else {
+        var startBefore = Math.max(0, last.start - start),
+            endAfter = Math.max(0, (start + old.length) - (last.start + last.added));
+        for (var i = startBefore; i > 0; --i) last.old.unshift(old[i - 1]);
+        for (var i = endAfter; i > 0; --i) last.old.push(old[old.length - i]);
+        if (startBefore) last.start = start;
+        last.added += added - (old.length - startBefore - endAfter);
+      }
+      this.time = time;
+    },
+    startCompound: function() {
+      if (!this.compound++) this.closed = true;
+    },
+    endCompound: function() {
+      if (!--this.compound) this.closed = true;
+    }
+  };
+
+  function stopMethod() {e_stop(this);}
+  // Ensure an event has a stop method.
+  function addStop(event) {
+    if (!event.stop) event.stop = stopMethod;
+    return event;
+  }
+
+  function e_preventDefault(e) {
+    if (e.preventDefault) e.preventDefault();
+    else e.returnValue = false;
+  }
+  function e_stopPropagation(e) {
+    if (e.stopPropagation) e.stopPropagation();
+    else e.cancelBubble = true;
+  }
+  function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}
+  CodeMirror.e_stop = e_stop;
+  CodeMirror.e_preventDefault = e_preventDefault;
+  CodeMirror.e_stopPropagation = e_stopPropagation;
+
+  function e_target(e) {return e.target || e.srcElement;}
+  function e_button(e) {
+    var b = e.which;
+    if (b == null) {
+      if (e.button & 1) b = 1;
+      else if (e.button & 2) b = 3;
+      else if (e.button & 4) b = 2;
+    }
+    if (mac && e.ctrlKey && b == 1) b = 3;
+    return b;
+  }
+
+  // Allow 3rd-party code to override event properties by adding an override
+  // object to an event object.
+  function e_prop(e, prop) {
+    var overridden = e.override && e.override.hasOwnProperty(prop);
+    return overridden ? e.override[prop] : e[prop];
+  }
+
+  // Event handler registration. If disconnect is true, it'll return a
+  // function that unregisters the handler.
+  function connect(node, type, handler, disconnect) {
+    if (typeof node.addEventListener == "function") {
+      node.addEventListener(type, handler, false);
+      if (disconnect) return function() {node.removeEventListener(type, handler, false);};
+    } else {
+      var wrapHandler = function(event) {handler(event || window.event);};
+      node.attachEvent("on" + type, wrapHandler);
+      if (disconnect) return function() {node.detachEvent("on" + type, wrapHandler);};
+    }
+  }
+  CodeMirror.connect = connect;
+
+  function Delayed() {this.id = null;}
+  Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}};
+
+  var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};
+
+  // Detect drag-and-drop
+  var dragAndDrop = function() {
+    // There is *some* kind of drag-and-drop support in IE6-8, but I
+    // couldn't get it to work yet.
+    if (ie_lt9) return false;
+    var div = elt('div');
+    return "draggable" in div || "dragDrop" in div;
+  }();
+
+  // Feature-detect whether newlines in textareas are converted to \r\n
+  var lineSep = function () {
+    var te = elt("textarea");
+    te.value = "foo\nbar";
+    if (te.value.indexOf("\r") > -1) return "\r\n";
+    return "\n";
+  }();
+
+  // For a reason I have yet to figure out, some browsers disallow
+  // word wrapping between certain characters *only* if a new inline
+  // element is started between them. This makes it hard to reliably
+  // measure the position of things, since that requires inserting an
+  // extra span. This terribly fragile set of regexps matches the
+  // character combinations that suffer from this phenomenon on the
+  // various browsers.
+  var spanAffectsWrapping = /^$/; // Won't match any two-character string
+  if (gecko) spanAffectsWrapping = /$'/;
+  else if (safari) spanAffectsWrapping = /\-[^ \-?]|\?[^ !'\"\),.\-\/:;\?\]\}]/;
+  else if (chrome) spanAffectsWrapping = /\-[^ \-\.?]|\?[^ \-\.?\]\}:;!'\"\),\/]|[\.!\"#&%\)*+,:;=>\]|\}~][\(\{\[<]|\$'/;
+
+  // Counts the column offset in a string, taking tabs into account.
+  // Used mostly to find indentation.
+  function countColumn(string, end, tabSize) {
+    if (end == null) {
+      end = string.search(/[^\s\u00a0]/);
+      if (end == -1) end = string.length;
+    }
+    for (var i = 0, n = 0; i < end; ++i) {
+      if (string.charAt(i) == "\t") n += tabSize - (n % tabSize);
+      else ++n;
+    }
+    return n;
+  }
+
+  function eltOffset(node, screen) {
+    // Take the parts of bounding client rect that we are interested in so we are able to edit if need be,
+    // since the returned value cannot be changed externally (they are kept in sync as the element moves within the page)
+    try { var box = node.getBoundingClientRect(); box = { top: box.top, left: box.left }; }
+    catch(e) { box = {top: 0, left: 0}; }
+    if (!screen) {
+      // Get the toplevel scroll, working around browser differences.
+      if (window.pageYOffset == null) {
+        var t = document.documentElement || document.body.parentNode;
+        if (t.scrollTop == null) t = document.body;
+        box.top += t.scrollTop; box.left += t.scrollLeft;
+      } else {
+        box.top += window.pageYOffset; box.left += window.pageXOffset;
+      }
+    }
+    return box;
+  }
+
+  function eltText(node) {
+    return node.textContent || node.innerText || node.nodeValue || "";
+  }
+
+  var spaceStrs = [""];
+  function spaceStr(n) {
+    while (spaceStrs.length <= n)
+      spaceStrs.push(lst(spaceStrs) + " ");
+    return spaceStrs[n];
+  }
+
+  function lst(arr) { return arr[arr.length-1]; }
+
+  function selectInput(node) {
+    if (ios) { // Mobile Safari apparently has a bug where select() is broken.
+      node.selectionStart = 0;
+      node.selectionEnd = node.value.length;
+    } else node.select();
+  }
+
+  // Operations on {line, ch} objects.
+  function posEq(a, b) {return a.line == b.line && a.ch == b.ch;}
+  function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);}
+  function copyPos(x) {return {line: x.line, ch: x.ch};}
+
+  function elt(tag, content, className, style) {
+    var e = document.createElement(tag);
+    if (className) e.className = className;
+    if (style) e.style.cssText = style;
+    if (typeof content == "string") setTextContent(e, content);
+    else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);
+    return e;
+  }
+  function removeChildren(e) {
+    e.innerHTML = "";
+    return e;
+  }
+  function removeChildrenAndAdd(parent, e) {
+    removeChildren(parent).appendChild(e);
+  }
+  function setTextContent(e, str) {
+    if (ie_lt9) {
+      e.innerHTML = "";
+      e.appendChild(document.createTextNode(str));
+    } else e.textContent = str;
+  }
+
+  // Used to position the cursor after an undo/redo by finding the
+  // last edited character.
+  function editEnd(from, to) {
+    if (!to) return 0;
+    if (!from) return to.length;
+    for (var i = from.length, j = to.length; i >= 0 && j >= 0; --i, --j)
+      if (from.charAt(i) != to.charAt(j)) break;
+    return j + 1;
+  }
+
+  function indexOf(collection, elt) {
+    if (collection.indexOf) return collection.indexOf(elt);
+    for (var i = 0, e = collection.length; i < e; ++i)
+      if (collection[i] == elt) return i;
+    return -1;
+  }
+  var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc]/;
+  function isWordChar(ch) {
+    return /\w/.test(ch) || ch > "\x80" &&
+      (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));
+  }
+
+  // See if "".split is the broken IE version, if so, provide an
+  // alternative way to split lines.
+  var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) {
+    var pos = 0, result = [], l = string.length;
+    while (pos <= l) {
+      var nl = string.indexOf("\n", pos);
+      if (nl == -1) nl = string.length;
+      var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
+      var rt = line.indexOf("\r");
+      if (rt != -1) {
+        result.push(line.slice(0, rt));
+        pos += rt + 1;
+      } else {
+        result.push(line);
+        pos = nl + 1;
+      }
+    }
+    return result;
+  } : function(string){return string.split(/\r\n?|\n/);};
+  CodeMirror.splitLines = splitLines;
+
+  var hasSelection = window.getSelection ? function(te) {
+    try { return te.selectionStart != te.selectionEnd; }
+    catch(e) { return false; }
+  } : function(te) {
+    try {var range = te.ownerDocument.selection.createRange();}
+    catch(e) {}
+    if (!range || range.parentElement() != te) return false;
+    return range.compareEndPoints("StartToEnd", range) != 0;
+  };
+
+  CodeMirror.defineMode("null", function() {
+    return {token: function(stream) {stream.skipToEnd();}};
+  });
+  CodeMirror.defineMIME("text/plain", "null");
+
+  var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
+                  19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
+                  36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
+                  46: "Delete", 59: ";", 91: "Mod", 92: "Mod", 93: "Mod", 109: "-", 107: "=", 127: "Delete",
+                  186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
+                  221: "]", 222: "'", 63276: "PageUp", 63277: "PageDown", 63275: "End", 63273: "Home",
+                  63234: "Left", 63232: "Up", 63235: "Right", 63233: "Down", 63302: "Insert", 63272: "Delete"};
+  CodeMirror.keyNames = keyNames;
+  (function() {
+    // Number keys
+    for (var i = 0; i < 10; i++) keyNames[i + 48] = String(i);
+    // Alphabetic keys
+    for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);
+    // Function keys
+    for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
+  })();
+
+  CodeMirror.version = "2.38 +";
+
+  return CodeMirror;
+})();
diff --git a/media/codemirror/css.js b/media/codemirror/css.js
new file mode 100644
index 0000000..f4ce9f9
--- /dev/null
+++ b/media/codemirror/css.js
@@ -0,0 +1,465 @@
+CodeMirror.defineMode("css", function(config) {
+  var indentUnit = config.indentUnit, type;
+  
+  var atMediaTypes = keySet([
+    "all", "aural", "braille", "handheld", "print", "projection", "screen",
+    "tty", "tv", "embossed"
+  ]);
+  
+  var atMediaFeatures = keySet([
+    "width", "min-width", "max-width", "height", "min-height", "max-height",
+    "device-width", "min-device-width", "max-device-width", "device-height",
+    "min-device-height", "max-device-height", "aspect-ratio",
+    "min-aspect-ratio", "max-aspect-ratio", "device-aspect-ratio",
+    "min-device-aspect-ratio", "max-device-aspect-ratio", "color", "min-color",
+    "max-color", "color-index", "min-color-index", "max-color-index",
+    "monochrome", "min-monochrome", "max-monochrome", "resolution",
+    "min-resolution", "max-resolution", "scan", "grid"
+  ]);
+
+  var propertyKeywords = keySet([
+    "align-content", "align-items", "align-self", "alignment-adjust",
+    "alignment-baseline", "anchor-point", "animation", "animation-delay",
+    "animation-direction", "animation-duration", "animation-iteration-count",
+    "animation-name", "animation-play-state", "animation-timing-function",
+    "appearance", "azimuth", "backface-visibility", "background",
+    "background-attachment", "background-clip", "background-color",
+    "background-image", "background-origin", "background-position",
+    "background-repeat", "background-size", "baseline-shift", "binding",
+    "bleed", "bookmark-label", "bookmark-level", "bookmark-state",
+    "bookmark-target", "border", "border-bottom", "border-bottom-color",
+    "border-bottom-left-radius", "border-bottom-right-radius",
+    "border-bottom-style", "border-bottom-width", "border-collapse",
+    "border-color", "border-image", "border-image-outset",
+    "border-image-repeat", "border-image-slice", "border-image-source",
+    "border-image-width", "border-left", "border-left-color",
+    "border-left-style", "border-left-width", "border-radius", "border-right",
+    "border-right-color", "border-right-style", "border-right-width",
+    "border-spacing", "border-style", "border-top", "border-top-color",
+    "border-top-left-radius", "border-top-right-radius", "border-top-style",
+    "border-top-width", "border-width", "bottom", "box-decoration-break",
+    "box-shadow", "box-sizing", "break-after", "break-before", "break-inside",
+    "caption-side", "clear", "clip", "color", "color-profile", "column-count",
+    "column-fill", "column-gap", "column-rule", "column-rule-color",
+    "column-rule-style", "column-rule-width", "column-span", "column-width",
+    "columns", "content", "counter-increment", "counter-reset", "crop", "cue",
+    "cue-after", "cue-before", "cursor", "direction", "display",
+    "dominant-baseline", "drop-initial-after-adjust",
+    "drop-initial-after-align", "drop-initial-before-adjust",
+    "drop-initial-before-align", "drop-initial-size", "drop-initial-value",
+    "elevation", "empty-cells", "fit", "fit-position", "flex", "flex-basis",
+    "flex-direction", "flex-flow", "flex-grow", "flex-shrink", "flex-wrap",
+    "float", "float-offset", "font", "font-feature-settings", "font-family",
+    "font-kerning", "font-language-override", "font-size", "font-size-adjust",
+    "font-stretch", "font-style", "font-synthesis", "font-variant",
+    "font-variant-alternates", "font-variant-caps", "font-variant-east-asian",
+    "font-variant-ligatures", "font-variant-numeric", "font-variant-position",
+    "font-weight", "grid-cell", "grid-column", "grid-column-align",
+    "grid-column-sizing", "grid-column-span", "grid-columns", "grid-flow",
+    "grid-row", "grid-row-align", "grid-row-sizing", "grid-row-span",
+    "grid-rows", "grid-template", "hanging-punctuation", "height", "hyphens",
+    "icon", "image-orientation", "image-rendering", "image-resolution",
+    "inline-box-align", "justify-content", "left", "letter-spacing",
+    "line-break", "line-height", "line-stacking", "line-stacking-ruby",
+    "line-stacking-shift", "line-stacking-strategy", "list-style",
+    "list-style-image", "list-style-position", "list-style-type", "margin",
+    "margin-bottom", "margin-left", "margin-right", "margin-top",
+    "marker-offset", "marks", "marquee-direction", "marquee-loop",
+    "marquee-play-count", "marquee-speed", "marquee-style", "max-height",
+    "max-width", "min-height", "min-width", "move-to", "nav-down", "nav-index",
+    "nav-left", "nav-right", "nav-up", "opacity", "order", "orphans", "outline",
+    "outline-color", "outline-offset", "outline-style", "outline-width",
+    "overflow", "overflow-style", "overflow-wrap", "overflow-x", "overflow-y",
+    "padding", "padding-bottom", "padding-left", "padding-right", "padding-top",
+    "page", "page-break-after", "page-break-before", "page-break-inside",
+    "page-policy", "pause", "pause-after", "pause-before", "perspective",
+    "perspective-origin", "pitch", "pitch-range", "play-during", "position",
+    "presentation-level", "punctuation-trim", "quotes", "rendering-intent",
+    "resize", "rest", "rest-after", "rest-before", "richness", "right",
+    "rotation", "rotation-point", "ruby-align", "ruby-overhang",
+    "ruby-position", "ruby-span", "size", "speak", "speak-as", "speak-header",
+    "speak-numeral", "speak-punctuation", "speech-rate", "stress", "string-set",
+    "tab-size", "table-layout", "target", "target-name", "target-new",
+    "target-position", "text-align", "text-align-last", "text-decoration",
+    "text-decoration-color", "text-decoration-line", "text-decoration-skip",
+    "text-decoration-style", "text-emphasis", "text-emphasis-color",
+    "text-emphasis-position", "text-emphasis-style", "text-height",
+    "text-indent", "text-justify", "text-outline", "text-shadow",
+    "text-space-collapse", "text-transform", "text-underline-position",
+    "text-wrap", "top", "transform", "transform-origin", "transform-style",
+    "transition", "transition-delay", "transition-duration",
+    "transition-property", "transition-timing-function", "unicode-bidi",
+    "vertical-align", "visibility", "voice-balance", "voice-duration",
+    "voice-family", "voice-pitch", "voice-range", "voice-rate", "voice-stress",
+    "voice-volume", "volume", "white-space", "widows", "width", "word-break",
+    "word-spacing", "word-wrap", "z-index"
+  ]);
+
+  var colorKeywords = keySet([
+    "black", "silver", "gray", "white", "maroon", "red", "purple", "fuchsia",
+    "green", "lime", "olive", "yellow", "navy", "blue", "teal", "aqua"
+  ]);
+  
+  var valueKeywords = keySet([
+    "above", "absolute", "activeborder", "activecaption", "afar",
+    "after-white-space", "ahead", "alias", "all", "all-scroll", "alternate",
+    "always", "amharic", "amharic-abegede", "antialiased", "appworkspace",
+    "arabic-indic", "armenian", "asterisks", "auto", "avoid", "background",
+    "backwards", "baseline", "below", "bidi-override", "binary", "bengali",
+    "blink", "block", "block-axis", "bold", "bolder", "border", "border-box",
+    "both", "bottom", "break-all", "break-word", "button", "button-bevel",
+    "buttonface", "buttonhighlight", "buttonshadow", "buttontext", "cambodian",
+    "capitalize", "caps-lock-indicator", "caption", "captiontext", "caret",
+    "cell", "center", "checkbox", "circle", "cjk-earthly-branch",
+    "cjk-heavenly-stem", "cjk-ideographic", "clear", "clip", "close-quote",
+    "col-resize", "collapse", "compact", "condensed", "contain", "content",
+    "content-box", "context-menu", "continuous", "copy", "cover", "crop",
+    "cross", "crosshair", "currentcolor", "cursive", "dashed", "decimal",
+    "decimal-leading-zero", "default", "default-button", "destination-atop",
+    "destination-in", "destination-out", "destination-over", "devanagari",
+    "disc", "discard", "document", "dot-dash", "dot-dot-dash", "dotted",
+    "double", "down", "e-resize", "ease", "ease-in", "ease-in-out", "ease-out",
+    "element", "ellipsis", "embed", "end", "ethiopic", "ethiopic-abegede",
+    "ethiopic-abegede-am-et", "ethiopic-abegede-gez", "ethiopic-abegede-ti-er",
+    "ethiopic-abegede-ti-et", "ethiopic-halehame-aa-er",
+    "ethiopic-halehame-aa-et", "ethiopic-halehame-am-et",
+    "ethiopic-halehame-gez", "ethiopic-halehame-om-et",
+    "ethiopic-halehame-sid-et", "ethiopic-halehame-so-et",
+    "ethiopic-halehame-ti-er", "ethiopic-halehame-ti-et",
+    "ethiopic-halehame-tig", "ew-resize", "expanded", "extra-condensed",
+    "extra-expanded", "fantasy", "fast", "fill", "fixed", "flat", "footnotes",
+    "forwards", "from", "geometricPrecision", "georgian", "graytext", "groove",
+    "gujarati", "gurmukhi", "hand", "hangul", "hangul-consonant", "hebrew",
+    "help", "hidden", "hide", "higher", "highlight", "highlighttext",
+    "hiragana", "hiragana-iroha", "horizontal", "hsl", "hsla", "icon", "ignore",
+    "inactiveborder", "inactivecaption", "inactivecaptiontext", "infinite",
+    "infobackground", "infotext", "inherit", "initial", "inline", "inline-axis",
+    "inline-block", "inline-table", "inset", "inside", "intrinsic", "invert",
+    "italic", "justify", "kannada", "katakana", "katakana-iroha", "khmer",
+    "landscape", "lao", "large", "larger", "left", "level", "lighter",
+    "line-through", "linear", "lines", "list-item", "listbox", "listitem",
+    "local", "logical", "loud", "lower", "lower-alpha", "lower-armenian",
+    "lower-greek", "lower-hexadecimal", "lower-latin", "lower-norwegian",
+    "lower-roman", "lowercase", "ltr", "malayalam", "match",
+    "media-controls-background", "media-current-time-display",
+    "media-fullscreen-button", "media-mute-button", "media-play-button",
+    "media-return-to-realtime-button", "media-rewind-button",
+    "media-seek-back-button", "media-seek-forward-button", "media-slider",
+    "media-sliderthumb", "media-time-remaining-display", "media-volume-slider",
+    "media-volume-slider-container", "media-volume-sliderthumb", "medium",
+    "menu", "menulist", "menulist-button", "menulist-text",
+    "menulist-textfield", "menutext", "message-box", "middle", "min-intrinsic",
+    "mix", "mongolian", "monospace", "move", "multiple", "myanmar", "n-resize",
+    "narrower", "navy", "ne-resize", "nesw-resize", "no-close-quote", "no-drop",
+    "no-open-quote", "no-repeat", "none", "normal", "not-allowed", "nowrap",
+    "ns-resize", "nw-resize", "nwse-resize", "oblique", "octal", "open-quote",
+    "optimizeLegibility", "optimizeSpeed", "oriya", "oromo", "outset",
+    "outside", "overlay", "overline", "padding", "padding-box", "painted",
+    "paused", "persian", "plus-darker", "plus-lighter", "pointer", "portrait",
+    "pre", "pre-line", "pre-wrap", "preserve-3d", "progress", "push-button",
+    "radio", "read-only", "read-write", "read-write-plaintext-only", "relative",
+    "repeat", "repeat-x", "repeat-y", "reset", "reverse", "rgb", "rgba",
+    "ridge", "right", "round", "row-resize", "rtl", "run-in", "running",
+    "s-resize", "sans-serif", "scroll", "scrollbar", "se-resize", "searchfield",
+    "searchfield-cancel-button", "searchfield-decoration",
+    "searchfield-results-button", "searchfield-results-decoration",
+    "semi-condensed", "semi-expanded", "separate", "serif", "show", "sidama",
+    "single", "skip-white-space", "slide", "slider-horizontal",
+    "slider-vertical", "sliderthumb-horizontal", "sliderthumb-vertical", "slow",
+    "small", "small-caps", "small-caption", "smaller", "solid", "somali",
+    "source-atop", "source-in", "source-out", "source-over", "space", "square",
+    "square-button", "start", "static", "status-bar", "stretch", "stroke",
+    "sub", "subpixel-antialiased", "super", "sw-resize", "table",
+    "table-caption", "table-cell", "table-column", "table-column-group",
+    "table-footer-group", "table-header-group", "table-row", "table-row-group",
+    "telugu", "text", "text-bottom", "text-top", "textarea", "textfield", "thai",
+    "thick", "thin", "threeddarkshadow", "threedface", "threedhighlight",
+    "threedlightshadow", "threedshadow", "tibetan", "tigre", "tigrinya-er",
+    "tigrinya-er-abegede", "tigrinya-et", "tigrinya-et-abegede", "to", "top",
+    "transparent", "ultra-condensed", "ultra-expanded", "underline", "up",
+    "upper-alpha", "upper-armenian", "upper-greek", "upper-hexadecimal",
+    "upper-latin", "upper-norwegian", "upper-roman", "uppercase", "urdu", "url",
+    "vertical", "vertical-text", "visible", "visibleFill", "visiblePainted",
+    "visibleStroke", "visual", "w-resize", "wait", "wave", "white", "wider",
+    "window", "windowframe", "windowtext", "x-large", "x-small", "xor",
+    "xx-large", "xx-small", "yellow"
+  ]);
+
+  function keySet(array) { var keys = {}; for (var i = 0; i < array.length; ++i) keys[array[i]] = true; return keys; }
+  function ret(style, tp) {type = tp; return style;}
+
+  function tokenBase(stream, state) {
+    var ch = stream.next();
+    if (ch == "@") {stream.eatWhile(/[\w\\\-]/); return ret("def", stream.current());}
+    else if (ch == "/" && stream.eat("*")) {
+      state.tokenize = tokenCComment;
+      return tokenCComment(stream, state);
+    }
+    else if (ch == "<" && stream.eat("!")) {
+      state.tokenize = tokenSGMLComment;
+      return tokenSGMLComment(stream, state);
+    }
+    else if (ch == "=") ret(null, "compare");
+    else if ((ch == "~" || ch == "|") && stream.eat("=")) return ret(null, "compare");
+    else if (ch == "\"" || ch == "'") {
+      state.tokenize = tokenString(ch);
+      return state.tokenize(stream, state);
+    }
+    else if (ch == "#") {
+      stream.eatWhile(/[\w\\\-]/);
+      return ret("atom", "hash");
+    }
+    else if (ch == "!") {
+      stream.match(/^\s*\w*/);
+      return ret("keyword", "important");
+    }
+    else if (/\d/.test(ch)) {
+      stream.eatWhile(/[\w.%]/);
+      return ret("number", "unit");
+    }
+    else if (ch === "-") {
+      if (/\d/.test(stream.peek())) {
+        stream.eatWhile(/[\w.%]/);
+        return ret("number", "unit");
+      } else if (stream.match(/^[^-]+-/)) {
+        return ret("meta", type);
+      }
+    }
+    else if (/[,+>*\/]/.test(ch)) {
+      return ret(null, "select-op");
+    }
+    else if (ch == "." && stream.match(/^-?[_a-z][_a-z0-9-]*/i)) {
+      return ret("qualifier", type);
+    }
+    else if (ch == ":") {
+      return ret("operator", ch);
+    }
+    else if (/[;{}\[\]\(\)]/.test(ch)) {
+      return ret(null, ch);
+    }
+    else if (ch == "u" && stream.match("rl(")) {
+      stream.backUp(1);
+      state.tokenize = tokenParenthesized;
+      return ret("property", "variable");
+    }
+    else {
+      stream.eatWhile(/[\w\\\-]/);
+      return ret("property", "variable");
+    }
+  }
+
+  function tokenCComment(stream, state) {
+    var maybeEnd = false, ch;
+    while ((ch = stream.next()) != null) {
+      if (maybeEnd && ch == "/") {
+        state.tokenize = tokenBase;
+        break;
+      }
+      maybeEnd = (ch == "*");
+    }
+    return ret("comment", "comment");
+  }
+
+  function tokenSGMLComment(stream, state) {
+    var dashes = 0, ch;
+    while ((ch = stream.next()) != null) {
+      if (dashes >= 2 && ch == ">") {
+        state.tokenize = tokenBase;
+        break;
+      }
+      dashes = (ch == "-") ? dashes + 1 : 0;
+    }
+    return ret("comment", "comment");
+  }
+
+  function tokenString(quote, nonInclusive) {
+    return function(stream, state) {
+      var escaped = false, ch;
+      while ((ch = stream.next()) != null) {
+        if (ch == quote && !escaped)
+          break;
+        escaped = !escaped && ch == "\\";
+      }
+      if (!escaped) {
+        if (nonInclusive) stream.backUp(1);
+        state.tokenize = tokenBase;
+      }
+      return ret("string", "string");
+    };
+  }
+
+  function tokenParenthesized(stream, state) {
+    stream.next(); // Must be '('
+    if (!stream.match(/\s*[\"\']/, false))
+      state.tokenize = tokenString(")", true);
+    else
+      state.tokenize = tokenBase;
+    return ret(null, "(");
+  }
+
+  return {
+    startState: function(base) {
+      return {tokenize: tokenBase,
+              baseIndent: base || 0,
+              stack: []};
+    },
+
+    token: function(stream, state) {
+      
+      // Use these terms when applicable (see http://www.xanthir.com/blog/b4E50)
+      // 
+      // rule** or **ruleset:
+      // A selector + braces combo, or an at-rule.
+      // 
+      // declaration block:
+      // A sequence of declarations.
+      // 
+      // declaration:
+      // A property + colon + value combo.
+      // 
+      // property value:
+      // The entire value of a property.
+      // 
+      // component value:
+      // A single piece of a property value. Like the 5px in
+      // text-shadow: 0 0 5px blue;. Can also refer to things that are
+      // multiple terms, like the 1-4 terms that make up the background-size
+      // portion of the background shorthand.
+      // 
+      // term:
+      // The basic unit of author-facing CSS, like a single number (5),
+      // dimension (5px), string ("foo"), or function. Officially defined
+      //  by the CSS 2.1 grammar (look for the 'term' production)
+      // 
+      // 
+      // simple selector:
+      // A single atomic selector, like a type selector, an attr selector, a
+      // class selector, etc.
+      // 
+      // compound selector:
+      // One or more simple selectors without a combinator. div.example is
+      // compound, div > .example is not.
+      // 
+      // complex selector:
+      // One or more compound selectors chained with combinators.
+      // 
+      // combinator:
+      // The parts of selectors that express relationships. There are four
+      // currently - the space (descendant combinator), the greater-than
+      // bracket (child combinator), the plus sign (next sibling combinator),
+      // and the tilda (following sibling combinator).
+      // 
+      // sequence of selectors:
+      // One or more of the named type of selector chained with commas.
+
+      if (state.tokenize == tokenBase && stream.eatSpace()) return null;
+      var style = state.tokenize(stream, state);
+
+      // Changing style returned based on context
+      var context = state.stack[state.stack.length-1];
+      if (style == "property") {
+        if (context == "propertyValue"){
+          if (valueKeywords[stream.current()]) {
+            style = "string-2";
+          } else if (colorKeywords[stream.current()]) {
+            style = "keyword";
+          } else {
+            style = "variable-2";
+          }
+        } else if (context == "rule") {
+          if (!propertyKeywords[stream.current()]) {
+            style += " error";
+          }
+        } else if (!context || context == "@media{") {
+          style = "tag";
+        } else if (context == "@media") {
+          if (atMediaTypes[stream.current()]) {
+            style = "attribute"; // Known attribute
+          } else if (/^(only|not)$/i.test(stream.current())) {
+            style = "keyword";
+          } else if (stream.current().toLowerCase() == "and") {
+            style = "error"; // "and" is only allowed in @mediaType
+          } else if (atMediaFeatures[stream.current()]) {
+            style = "error"; // Known property, should be in @mediaType(
+          } else {
+            // Unknown, expecting keyword or attribute, assuming attribute
+            style = "attribute error";
+          }
+        } else if (context == "@mediaType") {
+          if (atMediaTypes[stream.current()]) {
+            style = "attribute";
+          } else if (stream.current().toLowerCase() == "and") {
+            style = "operator";
+          } else if (/^(only|not)$/i.test(stream.current())) {
+            style = "error"; // Only allowed in @media
+          } else if (atMediaFeatures[stream.current()]) {
+            style = "error"; // Known property, should be in parentheses
+          } else {
+            // Unknown attribute or property, but expecting property (preceded
+            // by "and"). Should be in parentheses
+            style = "error";
+          }
+        } else if (context == "@mediaType(") {
+          if (propertyKeywords[stream.current()]) {
+            // do nothing, remains "property"
+          } else if (atMediaTypes[stream.current()]) {
+            style = "error"; // Known property, should be in parentheses
+          } else if (stream.current().toLowerCase() == "and") {
+            style = "operator";
+          } else if (/^(only|not)$/i.test(stream.current())) {
+            style = "error"; // Only allowed in @media
+          } else {
+            style += " error";
+          }
+        } else {
+          style = "error";
+        }
+      } else if (style == "atom") {
+        if(!context || context == "@media{") {
+          style = "builtin";
+        } else if (context == "propertyValue") {
+          if (!/^#([0-9a-fA-f]{3}|[0-9a-fA-f]{6})$/.test(stream.current())) {
+            style += " error";
+          }
+        } else {
+          style = "error";
+        }
+      } else if (context == "@media" && type == "{") {
+        style = "error";
+      }
+
+      // Push/pop context stack
+      if (type == "{") {
+        if (context == "@media" || context == "@mediaType") {
+          state.stack.pop();
+          state.stack[state.stack.length-1] = "@media{";
+        }
+        else state.stack.push("rule");
+      }
+      else if (type == "}") {
+        state.stack.pop();
+        if (context == "propertyValue") state.stack.pop();
+      }
+      else if (type == "@media") state.stack.push("@media");
+      else if (context == "@media" && /\b(keyword|attribute)\b/.test(style))
+        state.stack.push("@mediaType");
+      else if (context == "@mediaType" && stream.current() == ",") state.stack.pop();
+      else if (context == "@mediaType" && type == "(") state.stack.push("@mediaType(");
+      else if (context == "@mediaType(" && type == ")") state.stack.pop();
+      else if (context == "rule" && type == ":") state.stack.push("propertyValue");
+      else if (context == "propertyValue" && type == ";") state.stack.pop();
+      return style;
+    },
+
+    indent: function(state, textAfter) {
+      var n = state.stack.length;
+      if (/^\}/.test(textAfter))
+        n -= state.stack[state.stack.length-1] == "propertyValue" ? 2 : 1;
+      return state.baseIndent + n * indentUnit;
+    },
+
+    electricChars: "}"
+  };
+});
+
+CodeMirror.defineMIME("text/css", "css");
diff --git a/media/codemirror/docs.css b/media/codemirror/docs.css
new file mode 100644
index 0000000..547b617
--- /dev/null
+++ b/media/codemirror/docs.css
@@ -0,0 +1,167 @@
+body {
+  font-family: Droid Sans, Arial, sans-serif;
+  line-height: 1.5;
+  max-width: 64.3em;
+  margin: 3em auto;
+  padding: 0 1em;
+}
+
+h1 {
+  letter-spacing: -3px;
+  font-size: 3.23em;
+  font-weight: bold;
+  margin: 0;
+}
+
+h2 {
+  font-size: 1.23em;
+  font-weight: bold;
+  margin: .5em 0;
+  letter-spacing: -1px;
+}
+
+h3 {
+  font-size: 1em;
+  font-weight: bold;
+  margin: .4em 0;
+}
+
+pre {
+  background-color: #eee;
+  -moz-border-radius: 6px;
+  -webkit-border-radius: 6px;
+  border-radius: 6px;
+  padding: 1em;
+}
+
+pre.code {
+  margin: 0 1em;
+}
+
+.grey {
+  background-color: #eee;
+  border-radius: 6px;
+  margin-bottom: 1.65em;
+  margin-top: 0.825em;
+  padding: 0.825em 1.65em;
+  position: relative;
+}
+
+img.logo {
+  position: absolute;
+  right: -1em;
+  bottom: 4px;
+  max-width: 23.6875em; /* Scale image down with text to prevent clipping */
+}
+
+.grey > pre {
+  background:none;
+  border-radius:0;
+  padding:0;
+  margin:0;
+  font-size:2.2em;
+  line-height:1.2em;
+}
+
+a:link, a:visited, .quasilink {
+  color: #df0019;
+  cursor: pointer;
+  text-decoration: none;
+}
+
+a:hover, .quasilink:hover {
+  color: #800004;
+}
+
+h1 a:link, h1 a:visited, h1 a:hover {
+  color: black;
+}
+
+ul {
+  margin: 0;
+  padding-left: 1.2em;
+}
+
+a.download {
+  color: white;
+  background-color: #df0019;
+  width: 100%;
+  display: block;
+  text-align: center;
+  font-size: 1.23em;
+  font-weight: bold;
+  text-decoration: none;
+  -moz-border-radius: 6px;
+  -webkit-border-radius: 6px;
+  border-radius: 6px;
+  padding: .5em 0;
+  margin-bottom: 1em;
+}
+
+a.download:hover {
+  background-color: #bb0010;
+}
+
+.rel {
+  margin-bottom: 0;
+}
+
+.rel-note {
+  color: #777;
+  font-size: .9em;
+  margin-top: .1em;
+}
+
+.logo-braces {
+  color: #df0019;
+  position: relative;
+  top: -4px;
+}
+
+.blk {
+  float: left;
+}
+
+.left {
+  margin-right: 20.68em;
+  max-width: 37em;
+  padding-right: 6.53em;
+  padding-bottom: 1em;
+}
+
+.left1 {
+  width: 15.24em;
+  padding-right: 6.45em;
+}
+
+.left2 {
+  max-width: 15.24em;
+}
+
+.right {
+  width: 20.68em;
+  margin-left: -20.68em;
+}
+
+.leftbig {
+  width: 42.44em;
+  padding-right: 6.53em;
+}
+
+.rightsmall {
+  width: 15.24em;
+}
+
+.clear:after {
+  visibility: hidden;
+  display: block;
+  font-size: 0;
+  content: " ";
+  clear: both;
+  height: 0;
+}
+.clear { display: inline-block; }
+/* start commented backslash hack \*/
+* html .clear { height: 1%; }
+.clear { display: block; }
+/* close commented backslash hack */
diff --git a/media/codemirror/htmlmixed.js b/media/codemirror/htmlmixed.js
new file mode 100644
index 0000000..f2dd01d
--- /dev/null
+++ b/media/codemirror/htmlmixed.js
@@ -0,0 +1,84 @@
+CodeMirror.defineMode("htmlmixed", function(config) {
+  var htmlMode = CodeMirror.getMode(config, {name: "xml", htmlMode: true});
+  var jsMode = CodeMirror.getMode(config, "javascript");
+  var cssMode = CodeMirror.getMode(config, "css");
+
+  function html(stream, state) {
+    var style = htmlMode.token(stream, state.htmlState);
+    if (/(?:^|\s)tag(?:\s|$)/.test(style) && stream.current() == ">" && state.htmlState.context) {
+      if (/^script$/i.test(state.htmlState.context.tagName)) {
+        state.token = javascript;
+        state.localState = jsMode.startState(htmlMode.indent(state.htmlState, ""));
+      }
+      else if (/^style$/i.test(state.htmlState.context.tagName)) {
+        state.token = css;
+        state.localState = cssMode.startState(htmlMode.indent(state.htmlState, ""));
+      }
+    }
+    return style;
+  }
+  function maybeBackup(stream, pat, style) {
+    var cur = stream.current();
+    var close = cur.search(pat), m;
+    if (close > -1) stream.backUp(cur.length - close);
+    else if (m = cur.match(/<\/?$/)) {
+      stream.backUp(cur.length);
+      if (!stream.match(pat, false)) stream.match(cur[0]);
+    }
+    return style;
+  }
+  function javascript(stream, state) {
+    if (stream.match(/^<\/\s*script\s*>/i, false)) {
+      state.token = html;
+      state.localState = null;
+      return html(stream, state);
+    }
+    return maybeBackup(stream, /<\/\s*script\s*>/,
+                       jsMode.token(stream, state.localState));
+  }
+  function css(stream, state) {
+    if (stream.match(/^<\/\s*style\s*>/i, false)) {
+      state.token = html;
+      state.localState = null;
+      return html(stream, state);
+    }
+    return maybeBackup(stream, /<\/\s*style\s*>/,
+                       cssMode.token(stream, state.localState));
+  }
+
+  return {
+    startState: function() {
+      var state = htmlMode.startState();
+      return {token: html, localState: null, mode: "html", htmlState: state};
+    },
+
+    copyState: function(state) {
+      if (state.localState)
+        var local = CodeMirror.copyState(state.token == css ? cssMode : jsMode, state.localState);
+      return {token: state.token, localState: local, mode: state.mode,
+              htmlState: CodeMirror.copyState(htmlMode, state.htmlState)};
+    },
+
+    token: function(stream, state) {
+      return state.token(stream, state);
+    },
+
+    indent: function(state, textAfter) {
+      if (state.token == html || /^\s*<\//.test(textAfter))
+        return htmlMode.indent(state.htmlState, textAfter);
+      else if (state.token == javascript)
+        return jsMode.indent(state.localState, textAfter);
+      else
+        return cssMode.indent(state.localState, textAfter);
+    },
+
+    electricChars: "/{}:",
+
+    innerMode: function(state) {
+      var mode = state.token == html ? htmlMode : state.token == javascript ? jsMode : cssMode;
+      return {state: state.localState || state.htmlState, mode: mode};
+    }
+  };
+}, "xml", "javascript", "css");
+
+CodeMirror.defineMIME("text/html", "htmlmixed");
diff --git a/media/codemirror/javascript.js b/media/codemirror/javascript.js
new file mode 100644
index 0000000..ab40590
--- /dev/null
+++ b/media/codemirror/javascript.js
@@ -0,0 +1,422 @@
+// TODO actually recognize syntax of TypeScript constructs
+
+CodeMirror.defineMode("javascript", function(config, parserConfig) {
+  var indentUnit = config.indentUnit;
+  var jsonMode = parserConfig.json;
+  var isTS = parserConfig.typescript;
+
+  // Tokenizer
+
+  var keywords = function(){
+    function kw(type) {return {type: type, style: "keyword"};}
+    var A = kw("keyword a"), B = kw("keyword b"), C = kw("keyword c");
+    var operator = kw("operator"), atom = {type: "atom", style: "atom"};
+    
+    var jsKeywords = {
+      "if": A, "while": A, "with": A, "else": B, "do": B, "try": B, "finally": B,
+      "return": C, "break": C, "continue": C, "new": C, "delete": C, "throw": C,
+      "var": kw("var"), "const": kw("var"), "let": kw("var"),
+      "function": kw("function"), "catch": kw("catch"),
+      "for": kw("for"), "switch": kw("switch"), "case": kw("case"), "default": kw("default"),
+      "in": operator, "typeof": operator, "instanceof": operator,
+      "true": atom, "false": atom, "null": atom, "undefined": atom, "NaN": atom, "Infinity": atom
+    };
+
+    // Extend the 'normal' keywords with the TypeScript language extensions
+    if (isTS) {
+      var type = {type: "variable", style: "variable-3"};
+      var tsKeywords = {
+        // object-like things
+        "interface": kw("interface"),
+        "class": kw("class"),
+        "extends": kw("extends"),
+        "constructor": kw("constructor"),
+
+        // scope modifiers
+        "public": kw("public"),
+        "private": kw("private"),
+        "protected": kw("protected"),
+        "static": kw("static"),
+
+        "super": kw("super"),
+
+        // types
+        "string": type, "number": type, "bool": type, "any": type
+      };
+
+      for (var attr in tsKeywords) {
+        jsKeywords[attr] = tsKeywords[attr];
+      }
+    }
+
+    return jsKeywords;
+  }();
+
+  var isOperatorChar = /[+\-*&%=<>!?|]/;
+
+  function chain(stream, state, f) {
+    state.tokenize = f;
+    return f(stream, state);
+  }
+
+  function nextUntilUnescaped(stream, end) {
+    var escaped = false, next;
+    while ((next = stream.next()) != null) {
+      if (next == end && !escaped)
+        return false;
+      escaped = !escaped && next == "\\";
+    }
+    return escaped;
+  }
+
+  // Used as scratch variables to communicate multiple values without
+  // consing up tons of objects.
+  var type, content;
+  function ret(tp, style, cont) {
+    type = tp; content = cont;
+    return style;
+  }
+
+  function jsTokenBase(stream, state) {
+    var ch = stream.next();
+    if (ch == '"' || ch == "'")
+      return chain(stream, state, jsTokenString(ch));
+    else if (/[\[\]{}\(\),;\:\.]/.test(ch))
+      return ret(ch);
+    else if (ch == "0" && stream.eat(/x/i)) {
+      stream.eatWhile(/[\da-f]/i);
+      return ret("number", "number");
+    }      
+    else if (/\d/.test(ch) || ch == "-" && stream.eat(/\d/)) {
+      stream.match(/^\d*(?:\.\d*)?(?:[eE][+\-]?\d+)?/);
+      return ret("number", "number");
+    }
+    else if (ch == "/") {
+      if (stream.eat("*")) {
+        return chain(stream, state, jsTokenComment);
+      }
+      else if (stream.eat("/")) {
+        stream.skipToEnd();
+        return ret("comment", "comment");
+      }
+      else if (state.lastType == "operator" || state.lastType == "keyword c" ||
+               /^[\[{}\(,;:]$/.test(state.lastType)) {
+        nextUntilUnescaped(stream, "/");
+        stream.eatWhile(/[gimy]/); // 'y' is "sticky" option in Mozilla
+        return ret("regexp", "string-2");
+      }
+      else {
+        stream.eatWhile(isOperatorChar);
+        return ret("operator", null, stream.current());
+      }
+    }
+    else if (ch == "#") {
+        stream.skipToEnd();
+        return ret("error", "error");
+    }
+    else if (isOperatorChar.test(ch)) {
+      stream.eatWhile(isOperatorChar);
+      return ret("operator", null, stream.current());
+    }
+    else {
+      stream.eatWhile(/[\w\$_]/);
+      var word = stream.current(), known = keywords.propertyIsEnumerable(word) && keywords[word];
+      return (known && state.lastType != ".") ? ret(known.type, known.style, word) :
+                     ret("variable", "variable", word);
+    }
+  }
+
+  function jsTokenString(quote) {
+    return function(stream, state) {
+      if (!nextUntilUnescaped(stream, quote))
+        state.tokenize = jsTokenBase;
+      return ret("string", "string");
+    };
+  }
+
+  function jsTokenComment(stream, state) {
+    var maybeEnd = false, ch;
+    while (ch = stream.next()) {
+      if (ch == "/" && maybeEnd) {
+        state.tokenize = jsTokenBase;
+        break;
+      }
+      maybeEnd = (ch == "*");
+    }
+    return ret("comment", "comment");
+  }
+
+  // Parser
+
+  var atomicTypes = {"atom": true, "number": true, "variable": true, "string": true, "regexp": true};
+
+  function JSLexical(indented, column, type, align, prev, info) {
+    this.indented = indented;
+    this.column = column;
+    this.type = type;
+    this.prev = prev;
+    this.info = info;
+    if (align != null) this.align = align;
+  }
+
+  function inScope(state, varname) {
+    for (var v = state.localVars; v; v = v.next)
+      if (v.name == varname) return true;
+  }
+
+  function parseJS(state, style, type, content, stream) {
+    var cc = state.cc;
+    // Communicate our context to the combinators.
+    // (Less wasteful than consing up a hundred closures on every call.)
+    cx.state = state; cx.stream = stream; cx.marked = null, cx.cc = cc;
+  
+    if (!state.lexical.hasOwnProperty("align"))
+      state.lexical.align = true;
+
+    while(true) {
+      var combinator = cc.length ? cc.pop() : jsonMode ? expression : statement;
+      if (combinator(type, content)) {
+        while(cc.length && cc[cc.length - 1].lex)
+          cc.pop()();
+        if (cx.marked) return cx.marked;
+        if (type == "variable" && inScope(state, content)) return "variable-2";
+        return style;
+      }
+    }
+  }
+
+  // Combinator utils
+
+  var cx = {state: null, column: null, marked: null, cc: null};
+  function pass() {
+    for (var i = arguments.length - 1; i >= 0; i--) cx.cc.push(arguments[i]);
+  }
+  function cont() {
+    pass.apply(null, arguments);
+    return true;
+  }
+  function register(varname) {
+    function inList(list) {
+      for (var v = list; v; v = v.next)
+        if (v.name == varname) return true;
+      return false;
+    }
+    var state = cx.state;
+    if (state.context) {
+      cx.marked = "def";
+      if (inList(state.localVars)) return;
+      state.localVars = {name: varname, next: state.localVars};
+    } else {
+      if (inList(state.globalVars)) return;
+      state.globalVars = {name: varname, next: state.globalVars};
+    }
+  }
+
+  // Combinators
+
+  var defaultVars = {name: "this", next: {name: "arguments"}};
+  function pushcontext() {
+    cx.state.context = {prev: cx.state.context, vars: cx.state.localVars};
+    cx.state.localVars = defaultVars;
+  }
+  function popcontext() {
+    cx.state.localVars = cx.state.context.vars;
+    cx.state.context = cx.state.context.prev;
+  }
+  function pushlex(type, info) {
+    var result = function() {
+      var state = cx.state;
+      state.lexical = new JSLexical(state.indented, cx.stream.column(), type, null, state.lexical, info);
+    };
+    result.lex = true;
+    return result;
+  }
+  function poplex() {
+    var state = cx.state;
+    if (state.lexical.prev) {
+      if (state.lexical.type == ")")
+        state.indented = state.lexical.indented;
+      state.lexical = state.lexical.prev;
+    }
+  }
+  poplex.lex = true;
+
+  function expect(wanted) {
+    return function expecting(type) {
+      if (type == wanted) return cont();
+      else if (wanted == ";") return pass();
+      else return cont(arguments.callee);
+    };
+  }
+
+  function statement(type) {
+    if (type == "var") return cont(pushlex("vardef"), vardef1, expect(";"), poplex);
+    if (type == "keyword a") return cont(pushlex("form"), expression, statement, poplex);
+    if (type == "keyword b") return cont(pushlex("form"), statement, poplex);
+    if (type == "{") return cont(pushlex("}"), block, poplex);
+    if (type == ";") return cont();
+    if (type == "function") return cont(functiondef);
+    if (type == "for") return cont(pushlex("form"), expect("("), pushlex(")"), forspec1, expect(")"),
+                                      poplex, statement, poplex);
+    if (type == "variable") return cont(pushlex("stat"), maybelabel);
+    if (type == "switch") return cont(pushlex("form"), expression, pushlex("}", "switch"), expect("{"),
+                                         block, poplex, poplex);
+    if (type == "case") return cont(expression, expect(":"));
+    if (type == "default") return cont(expect(":"));
+    if (type == "catch") return cont(pushlex("form"), pushcontext, expect("("), funarg, expect(")"),
+                                        statement, poplex, popcontext);
+    return pass(pushlex("stat"), expression, expect(";"), poplex);
+  }
+  function expression(type) {
+    if (atomicTypes.hasOwnProperty(type)) return cont(maybeoperator);
+    if (type == "function") return cont(functiondef);
+    if (type == "keyword c") return cont(maybeexpression);
+    if (type == "(") return cont(pushlex(")"), maybeexpression, expect(")"), poplex, maybeoperator);
+    if (type == "operator") return cont(expression);
+    if (type == "[") return cont(pushlex("]"), commasep(expression, "]"), poplex, maybeoperator);
+    if (type == "{") return cont(pushlex("}"), commasep(objprop, "}"), poplex, maybeoperator);
+    return cont();
+  }
+  function maybeexpression(type) {
+    if (type.match(/[;\}\)\],]/)) return pass();
+    return pass(expression);
+  }
+    
+  function maybeoperator(type, value) {
+    if (type == "operator" && /\+\+|--/.test(value)) return cont(maybeoperator);
+    if (type == "operator" && value == "?") return cont(expression, expect(":"), expression);
+    if (type == ";") return;
+    if (type == "(") return cont(pushlex(")"), commasep(expression, ")"), poplex, maybeoperator);
+    if (type == ".") return cont(property, maybeoperator);
+    if (type == "[") return cont(pushlex("]"), expression, expect("]"), poplex, maybeoperator);
+  }
+  function maybelabel(type) {
+    if (type == ":") return cont(poplex, statement);
+    return pass(maybeoperator, expect(";"), poplex);
+  }
+  function property(type) {
+    if (type == "variable") {cx.marked = "property"; return cont();}
+  }
+  function objprop(type) {
+    if (type == "variable") cx.marked = "property";
+    if (atomicTypes.hasOwnProperty(type)) return cont(expect(":"), expression);
+  }
+  function commasep(what, end) {
+    function proceed(type) {
+      if (type == ",") return cont(what, proceed);
+      if (type == end) return cont();
+      return cont(expect(end));
+    }
+    return function commaSeparated(type) {
+      if (type == end) return cont();
+      else return pass(what, proceed);
+    };
+  }
+  function block(type) {
+    if (type == "}") return cont();
+    return pass(statement, block);
+  }
+  function maybetype(type) {
+    if (type == ":") return cont(typedef);
+    return pass();
+  }
+  function typedef(type) {
+    if (type == "variable"){cx.marked = "variable-3"; return cont();}
+    return pass();
+  }
+  function vardef1(type, value) {
+    if (type == "variable") {
+      register(value);
+      return isTS ? cont(maybetype, vardef2) : cont(vardef2);
+    }
+    return pass();
+  }
+  function vardef2(type, value) {
+    if (value == "=") return cont(expression, vardef2);
+    if (type == ",") return cont(vardef1);
+  }
+  function forspec1(type) {
+    if (type == "var") return cont(vardef1, expect(";"), forspec2);
+    if (type == ";") return cont(forspec2);
+    if (type == "variable") return cont(formaybein);
+    return cont(forspec2);
+  }
+  function formaybein(type, value) {
+    if (value == "in") return cont(expression);
+    return cont(maybeoperator, forspec2);
+  }
+  function forspec2(type, value) {
+    if (type == ";") return cont(forspec3);
+    if (value == "in") return cont(expression);
+    return cont(expression, expect(";"), forspec3);
+  }
+  function forspec3(type) {
+    if (type != ")") cont(expression);
+  }
+  function functiondef(type, value) {
+    if (type == "variable") {register(value); return cont(functiondef);}
+    if (type == "(") return cont(pushlex(")"), pushcontext, commasep(funarg, ")"), poplex, statement, popcontext);
+  }
+  function funarg(type, value) {
+    if (type == "variable") {register(value); return isTS ? cont(maybetype) : cont();}
+  }
+
+  // Interface
+
+  return {
+    startState: function(basecolumn) {
+      return {
+        tokenize: jsTokenBase,
+        lastType: null,
+        cc: [],
+        lexical: new JSLexical((basecolumn || 0) - indentUnit, 0, "block", false),
+        localVars: parserConfig.localVars,
+        globalVars: parserConfig.globalVars,
+        context: parserConfig.localVars && {vars: parserConfig.localVars},
+        indented: 0
+      };
+    },
+
+    token: function(stream, state) {
+      if (stream.sol()) {
+        if (!state.lexical.hasOwnProperty("align"))
+          state.lexical.align = false;
+        state.indented = stream.indentation();
+      }
+      if (stream.eatSpace()) return null;
+      var style = state.tokenize(stream, state);
+      if (type == "comment") return style;
+      state.lastType = type;
+      return parseJS(state, style, type, content, stream);
+    },
+
+    indent: function(state, textAfter) {
+      if (state.tokenize == jsTokenComment) return CodeMirror.Pass;
+      if (state.tokenize != jsTokenBase) return 0;
+      var firstChar = textAfter && textAfter.charAt(0), lexical = state.lexical;
+      if (lexical.type == "stat" && firstChar == "}") lexical = lexical.prev;
+      var type = lexical.type, closing = firstChar == type;
+      if (type == "vardef") return lexical.indented + (state.lastType == "operator" || state.lastType == "," ? 4 : 0);
+      else if (type == "form" && firstChar == "{") return lexical.indented;
+      else if (type == "form") return lexical.indented + indentUnit;
+      else if (type == "stat")
+        return lexical.indented + (state.lastType == "operator" || state.lastType == "," ? indentUnit : 0);
+      else if (lexical.info == "switch" && !closing)
+        return lexical.indented + (/^(?:case|default)\b/.test(textAfter) ? indentUnit : 2 * indentUnit);
+      else if (lexical.align) return lexical.column + (closing ? 0 : 1);
+      else return lexical.indented + (closing ? 0 : indentUnit);
+    },
+
+    electricChars: ":{}",
+
+    jsonMode: jsonMode
+  };
+});
+
+CodeMirror.defineMIME("text/javascript", "javascript");
+CodeMirror.defineMIME("text/ecmascript", "javascript");
+CodeMirror.defineMIME("application/javascript", "javascript");
+CodeMirror.defineMIME("application/ecmascript", "javascript");
+CodeMirror.defineMIME("application/json", {name: "javascript", json: true});
+CodeMirror.defineMIME("text/typescript", { name: "javascript", typescript: true });
+CodeMirror.defineMIME("application/typescript", { name: "javascript", typescript: true });
diff --git a/media/codemirror/xml.js b/media/codemirror/xml.js
new file mode 100644
index 0000000..ae7c725
--- /dev/null
+++ b/media/codemirror/xml.js
@@ -0,0 +1,322 @@
+CodeMirror.defineMode("xml", function(config, parserConfig) {
+  var indentUnit = config.indentUnit;
+  var Kludges = parserConfig.htmlMode ? {
+    autoSelfClosers: {'area': true, 'base': true, 'br': true, 'col': true, 'command': true,
+                      'embed': true, 'frame': true, 'hr': true, 'img': true, 'input': true,
+                      'keygen': true, 'link': true, 'meta': true, 'param': true, 'source': true,
+                      'track': true, 'wbr': true},
+    implicitlyClosed: {'dd': true, 'li': true, 'optgroup': true, 'option': true, 'p': true,
+                       'rp': true, 'rt': true, 'tbody': true, 'td': true, 'tfoot': true,
+                       'th': true, 'tr': true},
+    contextGrabbers: {
+      'dd': {'dd': true, 'dt': true},
+      'dt': {'dd': true, 'dt': true},
+      'li': {'li': true},
+      'option': {'option': true, 'optgroup': true},
+      'optgroup': {'optgroup': true},
+      'p': {'address': true, 'article': true, 'aside': true, 'blockquote': true, 'dir': true,
+            'div': true, 'dl': true, 'fieldset': true, 'footer': true, 'form': true,
+            'h1': true, 'h2': true, 'h3': true, 'h4': true, 'h5': true, 'h6': true,
+            'header': true, 'hgroup': true, 'hr': true, 'menu': true, 'nav': true, 'ol': true,
+            'p': true, 'pre': true, 'section': true, 'table': true, 'ul': true},
+      'rp': {'rp': true, 'rt': true},
+      'rt': {'rp': true, 'rt': true},
+      'tbody': {'tbody': true, 'tfoot': true},
+      'td': {'td': true, 'th': true},
+      'tfoot': {'tbody': true},
+      'th': {'td': true, 'th': true},
+      'thead': {'tbody': true, 'tfoot': true},
+      'tr': {'tr': true}
+    },
+    doNotIndent: {"pre": true},
+    allowUnquoted: true,
+    allowMissing: true
+  } : {
+    autoSelfClosers: {},
+    implicitlyClosed: {},
+    contextGrabbers: {},
+    doNotIndent: {},
+    allowUnquoted: false,
+    allowMissing: false
+  };
+  var alignCDATA = parserConfig.alignCDATA;
+
+  // Return variables for tokenizers
+  var tagName, type;
+
+  function inText(stream, state) {
+    function chain(parser) {
+      state.tokenize = parser;
+      return parser(stream, state);
+    }
+
+    var ch = stream.next();
+    if (ch == "<") {
+      if (stream.eat("!")) {
+        if (stream.eat("[")) {
+          if (stream.match("CDATA[")) return chain(inBlock("atom", "]]>"));
+          else return null;
+        }
+        else if (stream.match("--")) return chain(inBlock("comment", "-->"));
+        else if (stream.match("DOCTYPE", true, true)) {
+          stream.eatWhile(/[\w\._\-]/);
+          return chain(doctype(1));
+        }
+        else return null;
+      }
+      else if (stream.eat("?")) {
+        stream.eatWhile(/[\w\._\-]/);
+        state.tokenize = inBlock("meta", "?>");
+        return "meta";
+      }
+      else {
+        var isClose = stream.eat("/");
+        tagName = "";
+        var c;
+        while ((c = stream.eat(/[^\s\u00a0=<>\"\'\/?]/))) tagName += c;
+        if (!tagName) return "error";
+        type = isClose ? "closeTag" : "openTag";
+        state.tokenize = inTag;
+        return "tag";
+      }
+    }
+    else if (ch == "&") {
+      var ok;
+      if (stream.eat("#")) {
+        if (stream.eat("x")) {
+          ok = stream.eatWhile(/[a-fA-F\d]/) && stream.eat(";");          
+        } else {
+          ok = stream.eatWhile(/[\d]/) && stream.eat(";");
+        }
+      } else {
+        ok = stream.eatWhile(/[\w\.\-:]/) && stream.eat(";");
+      }
+      return ok ? "atom" : "error";
+    }
+    else {
+      stream.eatWhile(/[^&<]/);
+      return null;
+    }
+  }
+
+  function inTag(stream, state) {
+    var ch = stream.next();
+    if (ch == ">" || (ch == "/" && stream.eat(">"))) {
+      state.tokenize = inText;
+      type = ch == ">" ? "endTag" : "selfcloseTag";
+      return "tag";
+    }
+    else if (ch == "=") {
+      type = "equals";
+      return null;
+    }
+    else if (/[\'\"]/.test(ch)) {
+      state.tokenize = inAttribute(ch);
+      return state.tokenize(stream, state);
+    }
+    else {
+      stream.eatWhile(/[^\s\u00a0=<>\"\']/);
+      return "word";
+    }
+  }
+
+  function inAttribute(quote) {
+    return function(stream, state) {
+      while (!stream.eol()) {
+        if (stream.next() == quote) {
+          state.tokenize = inTag;
+          break;
+        }
+      }
+      return "string";
+    };
+  }
+
+  function inBlock(style, terminator) {
+    return function(stream, state) {
+      while (!stream.eol()) {
+        if (stream.match(terminator)) {
+          state.tokenize = inText;
+          break;
+        }
+        stream.next();
+      }
+      return style;
+    };
+  }
+  function doctype(depth) {
+    return function(stream, state) {
+      var ch;
+      while ((ch = stream.next()) != null) {
+        if (ch == "<") {
+          state.tokenize = doctype(depth + 1);
+          return state.tokenize(stream, state);
+        } else if (ch == ">") {
+          if (depth == 1) {
+            state.tokenize = inText;
+            break;
+          } else {
+            state.tokenize = doctype(depth - 1);
+            return state.tokenize(stream, state);
+          }
+        }
+      }
+      return "meta";
+    };
+  }
+
+  var curState, setStyle;
+  function pass() {
+    for (var i = arguments.length - 1; i >= 0; i--) curState.cc.push(arguments[i]);
+  }
+  function cont() {
+    pass.apply(null, arguments);
+    return true;
+  }
+
+  function pushContext(tagName, startOfLine) {
+    var noIndent = Kludges.doNotIndent.hasOwnProperty(tagName) || (curState.context && curState.context.noIndent);
+    curState.context = {
+      prev: curState.context,
+      tagName: tagName,
+      indent: curState.indented,
+      startOfLine: startOfLine,
+      noIndent: noIndent
+    };
+  }
+  function popContext() {
+    if (curState.context) curState.context = curState.context.prev;
+  }
+
+  function element(type) {
+    if (type == "openTag") {
+      curState.tagName = tagName;
+      return cont(attributes, endtag(curState.startOfLine));
+    } else if (type == "closeTag") {
+      var err = false;
+      if (curState.context) {
+        if (curState.context.tagName != tagName) {
+          if (Kludges.implicitlyClosed.hasOwnProperty(curState.context.tagName.toLowerCase())) {
+            popContext();
+          }
+          err = !curState.context || curState.context.tagName != tagName;
+        }
+      } else {
+        err = true;
+      }
+      if (err) setStyle = "error";
+      return cont(endclosetag(err));
+    }
+    return cont();
+  }
+  function endtag(startOfLine) {
+    return function(type) {
+      if (type == "selfcloseTag" ||
+          (type == "endTag" && Kludges.autoSelfClosers.hasOwnProperty(curState.tagName.toLowerCase()))) {
+        maybePopContext(curState.tagName.toLowerCase());
+        return cont();
+      }
+      if (type == "endTag") {
+        maybePopContext(curState.tagName.toLowerCase());
+        pushContext(curState.tagName, startOfLine);
+        return cont();
+      }
+      return cont();
+    };
+  }
+  function endclosetag(err) {
+    return function(type) {
+      if (err) setStyle = "error";
+      if (type == "endTag") { popContext(); return cont(); }
+      setStyle = "error";
+      return cont(arguments.callee);
+    };
+  }
+  function maybePopContext(nextTagName) {
+    var parentTagName;
+    while (true) {
+      if (!curState.context) {
+        return;
+      }
+      parentTagName = curState.context.tagName.toLowerCase();
+      if (!Kludges.contextGrabbers.hasOwnProperty(parentTagName) ||
+          !Kludges.contextGrabbers[parentTagName].hasOwnProperty(nextTagName)) {
+        return;
+      }
+      popContext();
+    }
+  }
+
+  function attributes(type) {
+    if (type == "word") {setStyle = "attribute"; return cont(attribute, attributes);}
+    if (type == "endTag" || type == "selfcloseTag") return pass();
+    setStyle = "error";
+    return cont(attributes);
+  }
+  function attribute(type) {
+    if (type == "equals") return cont(attvalue, attributes);
+    if (!Kludges.allowMissing) setStyle = "error";
+    else if (type == "word") setStyle = "attribute";
+    return (type == "endTag" || type == "selfcloseTag") ? pass() : cont();
+  }
+  function attvalue(type) {
+    if (type == "string") return cont(attvaluemaybe);
+    if (type == "word" && Kludges.allowUnquoted) {setStyle = "string"; return cont();}
+    setStyle = "error";
+    return (type == "endTag" || type == "selfCloseTag") ? pass() : cont();
+  }
+  function attvaluemaybe(type) {
+    if (type == "string") return cont(attvaluemaybe);
+    else return pass();
+  }
+
+  return {
+    startState: function() {
+      return {tokenize: inText, cc: [], indented: 0, startOfLine: true, tagName: null, context: null};
+    },
+
+    token: function(stream, state) {
+      if (stream.sol()) {
+        state.startOfLine = true;
+        state.indented = stream.indentation();
+      }
+      if (stream.eatSpace()) return null;
+
+      setStyle = type = tagName = null;
+      var style = state.tokenize(stream, state);
+      state.type = type;
+      if ((style || type) && style != "comment") {
+        curState = state;
+        while (true) {
+          var comb = state.cc.pop() || element;
+          if (comb(type || style)) break;
+        }
+      }
+      state.startOfLine = false;
+      return setStyle || style;
+    },
+
+    indent: function(state, textAfter, fullLine) {
+      var context = state.context;
+      if ((state.tokenize != inTag && state.tokenize != inText) ||
+          context && context.noIndent)
+        return fullLine ? fullLine.match(/^(\s*)/)[0].length : 0;
+      if (alignCDATA && /<!\[CDATA\[/.test(textAfter)) return 0;
+      if (context && /^<\//.test(textAfter))
+        context = context.prev;
+      while (context && !context.startOfLine)
+        context = context.prev;
+      if (context) return context.indent + indentUnit;
+      else return 0;
+    },
+
+    electricChars: "/",
+
+    configuration: parserConfig.htmlMode ? "html" : "xml"
+  };
+});
+
+CodeMirror.defineMIME("text/xml", "xml");
+CodeMirror.defineMIME("application/xml", "xml");
+if (!CodeMirror.mimeModes.hasOwnProperty("text/html"))
+  CodeMirror.defineMIME("text/html", {name: "xml", htmlMode: true});
diff --git a/templates/editexpopage.html b/templates/editexpopage.html
index 606a47c..d66c9ca 100644
--- a/templates/editexpopage.html
+++ b/templates/editexpopage.html
@@ -4,12 +4,104 @@
 
 <!--<script src="{{ settings.TINY_MCE_MEDIA_URL }}tiny_mce.js" type="text/javascript"></script>-->
 <!-- <script type="text/javascript"> tinyMCE.init({ mode : "textareas"  }); </script>-->
+
+    <script src={{ settings.MEDIA_URL }}codemirror/codemirror.js></script>
+    <script src={{ settings.MEDIA_URL }}codemirror/xml.js></script>
+    <script src={{ settings.MEDIA_URL }}codemirror/javascript.js></script>
+    <script src={{ settings.MEDIA_URL }}codemirror/css.js></script>
+    <script src={{ settings.MEDIA_URL }}codemirror/htmlmixed.js></script>
+    <link rel=stylesheet href={{ settings.MEDIA_URL }}codemirror/codemirror.css>
+    <link rel=stylesheet href={{ settings.MEDIA_URL }}codemirror/docs.css>
+    <style type=text/css>
+      .CodeMirror {
+        float: left;
+        width: 50%;
+        border: 1px solid black;
+        height: 80%;
+      }
+      .CodeMirror-scroll{
+        height: 99%
+      }
+      iframe {
+        width: 49%;
+        height: 80%;
+        float: left;
+        border: 1px solid black;
+        border-left: 0px;
+      }
+      body{max-width: none;
+           margin-left: 275px;
+           margin-right: 50px;
+           text-align: left;
+           }
+      #id_change_message{
+      height: 5%;
+      }
+    </style>
 {% endblock %}
 {% block body %}
 <h1>Edit {{ path }}</h1>
 <form action="" method="post">{% csrf_token %}
-{{form.as_p}}
+{{ form.non_field_errors }}
+<div class="fieldWrapper">
+    {{ form.title.errors }}
+    <label for="{{ form.title.id_for_label }}">Title:</label>
+    {{ form.title }}
+</div>
+<div class="fieldWrapper">
+    {{ form.html.errors }}
+    <!--<label for="{{ form.title.id_for_label }}">HTML:</label> -->
+    {{ form.html }}<iframe id=preview></iframe>
+</div>
+<button type="button" onclick="addTag('i', '')">italic</button> 
+<button type="button" onclick="addTag('b', '')">bold</button> 
+<button type="button" onclick="addTag('h2', 'id=&quot;tophead&quot;')">top heading</button> 
+<button type="button" onclick="addTag('h1', '')">heading 1</button> 
+<button type="button" onclick="addTag('h2', '')">heading 2</button> 
+<button type="button" onclick="addTag('h3', '')">heading 3</button> 
+<button type="button" onclick="addTag('h4', '')">heading 4</button> 
+<button type="button" onclick="addTag('a', 'href=&quot;&quot;')">hyperlink</button> 
+<button type="button" onclick="addTag('p', '')">paragraph</button> 
+<div class="fieldWrapper">
+    {{ form.change_message.errors }}
+    <label for="{{ form.title.id_for_label }}">Git change message:</label>
+    {{ form.change_message }}
+</div>
+{% include "menu.html" %}
 <p><input type="submit" value="Submit" /></p>
 </form>
-{% include "menu.html" %}
+    <script>
+      var delay;
+      // Initialize CodeMirror editor with a nice html5 canvas demo.
+      var editor = CodeMirror.fromTextArea(document.getElementById('id_html'), {
+        mode: 'text/html',
+        tabMode: 'indent',
+        onChange: function() {
+          clearTimeout(delay);
+          delay = setTimeout(updatePreview, 300);
+        }
+      });
+      
+      function updatePreview() {
+        var previewFrame = document.getElementById('preview');
+        var preview =  previewFrame.contentDocument ||  previewFrame.contentWindow.document;
+        preview.open();
+        preview.write("<html><head><meta http-equiv='Content-Type' content='text/html; charset=utf-8' /><link rel='stylesheet' type='text/css' href='/css/main2.css' /></head><body>");
+        preview.write(editor.getValue());
+        preview.write("</body></html>");
+        preview.close();
+      }
+      setTimeout(updatePreview, 300);
+      
+      function addTag(tag, attr){
+          // For codemirror & center cursor
+          var from = editor.getCursor(true);
+          var to = editor.getCursor(false);
+          editor.replaceRange("</"+tag+">", to);
+          if (attr.length > 0) {attr = " " + attr;}
+          editor.replaceRange("<"+tag+attr+">", from);
+          editor.focus();
+          editor.setCursor({line: to.line , ch : to.ch + 2 + tag.length + attr.length });
+      }
+    </script>
 {% endblock %}