diff --git a/IPython/frontend/html/notebook/static/js/cell.js b/IPython/frontend/html/notebook/static/js/cell.js
index 3bf37a4..95084c2 100644
--- a/IPython/frontend/html/notebook/static/js/cell.js
+++ b/IPython/frontend/html/notebook/static/js/cell.js
@@ -3,70 +3,78 @@
 // Cell
 //============================================================================
 
+var IPython = (function (IPython) {
 
-var Cell = function (notebook) {
-    this.notebook = notebook;
-    this.selected = false;
-    this.element;
-    this.create_element();
-    if (this.element !== undefined) {
-        this.element.data("cell", this);
-        this.bind_events();
-    }
-    this.cell_id = uuid();
-};
-
-
-Cell.prototype.grow = function(element) {
-    // Grow the cell by hand. This is used upon reloading from JSON, when the
-    // autogrow handler is not called.
-    var dom = element.get(0);
-    var lines_count = 0;
-    // modified split rule from
-    // http://stackoverflow.com/questions/2035910/how-to-get-the-number-of-lines-in-a-textarea/2036424#2036424
-    var lines = dom.value.split(/\r|\r\n|\n/);
-    lines_count = lines.length;
-    if (lines_count >= 1) {
-        dom.rows = lines_count;
-    } else {
-        dom.rows = 1;
-    }
-};
-
-
-Cell.prototype.select = function () {
-    this.element.addClass('ui-widget-content ui-corner-all');
-    this.selected = true;
-    // TODO: we need t test across browsers to see if both of these are needed.
-    // In the meantime, there should not be any harm in having them both.
-    this.element.find('textarea').trigger('focusin');
-    this.element.find('textarea').trigger('focus');
-};
-
-
-Cell.prototype.unselect = function () {
-    this.element.removeClass('ui-widget-content ui-corner-all');
-    this.selected = false;
-};
-
-
-Cell.prototype.bind_events = function () {
-    var that = this;
-    var nb = that.notebook
-    that.element.click(function (event) {
-        if (that.selected === false) {
-            nb.select(nb.find_cell_index(that));
-        };
-    });
-    that.element.focusin(function (event) {
-        if (that.selected === false) {
-            nb.select(nb.find_cell_index(that));
-        };
-    });
-};
-
-
-// Subclasses must implement create_element.
-Cell.prototype.create_element = function () {};
+    var utils = IPython.utils;
 
+    var Cell = function (notebook) {
+        this.notebook = notebook;
+        this.selected = false;
+        this.element;
+        this.create_element();
+        if (this.element !== undefined) {
+            this.element.data("cell", this);
+            this.bind_events();
+        }
+        this.cell_id = utils.uuid();
+    };
+
+
+    Cell.prototype.grow = function(element) {
+        // Grow the cell by hand. This is used upon reloading from JSON, when the
+        // autogrow handler is not called.
+        var dom = element.get(0);
+        var lines_count = 0;
+        // modified split rule from
+        // http://stackoverflow.com/questions/2035910/how-to-get-the-number-of-lines-in-a-textarea/2036424#2036424
+        var lines = dom.value.split(/\r|\r\n|\n/);
+        lines_count = lines.length;
+        if (lines_count >= 1) {
+            dom.rows = lines_count;
+        } else {
+            dom.rows = 1;
+        }
+    };
+
+
+    Cell.prototype.select = function () {
+        this.element.addClass('ui-widget-content ui-corner-all');
+        this.selected = true;
+        // TODO: we need t test across browsers to see if both of these are needed.
+        // In the meantime, there should not be any harm in having them both.
+        this.element.find('textarea').trigger('focusin');
+        this.element.find('textarea').trigger('focus');
+    };
+
+
+    Cell.prototype.unselect = function () {
+        this.element.removeClass('ui-widget-content ui-corner-all');
+        this.selected = false;
+    };
+
+
+    Cell.prototype.bind_events = function () {
+        var that = this;
+        var nb = that.notebook
+        that.element.click(function (event) {
+            if (that.selected === false) {
+                nb.select(nb.find_cell_index(that));
+            };
+        });
+        that.element.focusin(function (event) {
+            if (that.selected === false) {
+                nb.select(nb.find_cell_index(that));
+            };
+        });
+    };
+
+
+    // Subclasses must implement create_element.
+    Cell.prototype.create_element = function () {};
+
+    IPython.Cell = Cell;
+
+    return IPython;
+
+}(IPython));
 
diff --git a/IPython/frontend/html/notebook/static/js/codecell.js b/IPython/frontend/html/notebook/static/js/codecell.js
index aba9477..348a43a 100644
--- a/IPython/frontend/html/notebook/static/js/codecell.js
+++ b/IPython/frontend/html/notebook/static/js/codecell.js
@@ -3,193 +3,199 @@
 // CodeCell
 //============================================================================
 
+var IPython = (function (IPython) {
 
-var CodeCell = function (notebook) {
-    this.code_mirror = null;
-    this.input_prompt_number = ' ';
-    Cell.apply(this, arguments);
-};
-
-
-CodeCell.prototype = new Cell();
-
-
-CodeCell.prototype.create_element = function () {
-    var cell =  $('<div></div>').addClass('cell code_cell vbox border-box-sizing');
-    var input = $('<div></div>').addClass('input hbox border-box-sizing');
-    input.append($('<div/>').addClass('prompt input_prompt monospace-font'));
-    var input_area = $('<div/>').addClass('input_area box-flex1 border-box-sizing');
-    this.code_mirror = CodeMirror(input_area.get(0), {
-        indentUnit : 4,
-        enterMode : 'flat',
-        tabMode: 'shift'
-    });
-    input.append(input_area);
-    var output = $('<div></div>').addClass('output vbox border-box-sizing');
-    cell.append(input).append(output);
-    this.element = cell;
-    this.collapse()
-};
-
-
-CodeCell.prototype.select = function () {
-    Cell.prototype.select.apply(this);
-    this.code_mirror.focus();
-};
-
-
-CodeCell.prototype.append_pyout = function (data, n) {
-    var toinsert = $("<div/>").addClass("output_area output_pyout hbox monospace-font");
-    toinsert.append($('<div/>').
-        addClass('prompt output_prompt').
-        html('Out[' + n + ']:')
-    );
-    this.append_display_data(data, toinsert);
-    toinsert.children().last().addClass("box_flex1");
-    this.element.find("div.output").append(toinsert);
-    // If we just output latex, typeset it.
-    if (data["text/latex"] !== undefined) {
-        MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
-    };
-};
-
-
-CodeCell.prototype.append_pyerr = function (ename, evalue, tb) {
-    var s = '';
-    var len = tb.length;
-    for (var i=0; i<len; i++) {
-        s = s + tb[i] + '\n';
-    }
-    s = s + '\n';
-    this.append_stream(s);
-};
-
-
-CodeCell.prototype.append_display_data = function (data, element) {
-    console.log(data);
-    if (data["text/latex"] !== undefined) {
-        this.append_latex(data["text/latex"], element);
-        // If it is undefined, then we just appended to div.output, which
-        // makes the latex visible and we can typeset it. The typesetting
-        // has to be done after the latex is on the page.
-        if (element === undefined) {
+    var utils = IPython.utils;
+
+    var CodeCell = function (notebook) {
+        this.code_mirror = null;
+        this.input_prompt_number = ' ';
+        IPython.Cell.apply(this, arguments);
+    };
+
+
+    CodeCell.prototype = new IPython.Cell();
+
+
+    CodeCell.prototype.create_element = function () {
+        var cell =  $('<div></div>').addClass('cell code_cell vbox border-box-sizing');
+        var input = $('<div></div>').addClass('input hbox border-box-sizing');
+        input.append($('<div/>').addClass('prompt input_prompt monospace-font'));
+        var input_area = $('<div/>').addClass('input_area box-flex1 border-box-sizing');
+        this.code_mirror = CodeMirror(input_area.get(0), {
+            indentUnit : 4,
+            enterMode : 'flat',
+            tabMode: 'shift'
+        });
+        input.append(input_area);
+        var output = $('<div></div>').addClass('output vbox border-box-sizing');
+        cell.append(input).append(output);
+        this.element = cell;
+        this.collapse()
+    };
+
+
+    CodeCell.prototype.select = function () {
+        IPython.Cell.prototype.select.apply(this);
+        this.code_mirror.focus();
+    };
+
+
+    CodeCell.prototype.append_pyout = function (data, n) {
+        var toinsert = $("<div/>").addClass("output_area output_pyout hbox monospace-font");
+        toinsert.append($('<div/>').
+            addClass('prompt output_prompt').
+            html('Out[' + n + ']:')
+        );
+        this.append_display_data(data, toinsert);
+        toinsert.children().last().addClass("box_flex1");
+        this.element.find("div.output").append(toinsert);
+        // If we just output latex, typeset it.
+        if (data["text/latex"] !== undefined) {
             MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
         };
-    } else if (data["image/svg+xml"] !== undefined) {
-        this.append_svg(data["image/svg+xml"], element);
-    } else if (data["image/png"] !== undefined) {
-        this.append_png(data["image/png"], element);
-    } else if (data["text/plain"] !== undefined) {
-        this.append_stream(data["text/plain"], element);
     };
-    return element;
-};
 
 
-CodeCell.prototype.append_stream = function (data, element) {
-    element = element || this.element.find("div.output");
-    var toinsert = $("<div/>").addClass("output_area output_stream monospace-font");
-    toinsert.append($("<pre/>").addClass("monospace-font").html(fixConsole(data)));
-    element.append(toinsert);
-    return element;
-};
+    CodeCell.prototype.append_pyerr = function (ename, evalue, tb) {
+        var s = '';
+        var len = tb.length;
+        for (var i=0; i<len; i++) {
+            s = s + tb[i] + '\n';
+        }
+        s = s + '\n';
+        this.append_stream(s);
+    };
 
 
-CodeCell.prototype.append_svg = function (svg, element) {
-    element = element || this.element.find("div.output");
-    var toinsert = $("<div/>").addClass("output_area output_svg");
-    toinsert.append(svg);
-    element.append(toinsert);
-    return element;
-};
+    CodeCell.prototype.append_display_data = function (data, element) {
+        if (data["text/latex"] !== undefined) {
+            this.append_latex(data["text/latex"], element);
+            // If it is undefined, then we just appended to div.output, which
+            // makes the latex visible and we can typeset it. The typesetting
+            // has to be done after the latex is on the page.
+            if (element === undefined) {
+                MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
+            };
+        } else if (data["image/svg+xml"] !== undefined) {
+            this.append_svg(data["image/svg+xml"], element);
+        } else if (data["image/png"] !== undefined) {
+            this.append_png(data["image/png"], element);
+        } else if (data["text/plain"] !== undefined) {
+            this.append_stream(data["text/plain"], element);
+        };
+        return element;
+    };
 
 
-CodeCell.prototype.append_png = function (png, element) {
-    element = element || this.element.find("div.output");
-    var toinsert = $("<div/>").addClass("output_area output_png");
-    toinsert.append($("<img/>").attr('src','data:image/png;base64,'+png));
-    element.append(toinsert);
-    return element;
-};
+    CodeCell.prototype.append_stream = function (data, element) {
+        element = element || this.element.find("div.output");
+        var toinsert = $("<div/>").addClass("output_area output_stream monospace-font");
+        toinsert.append($("<pre/>").addClass("monospace-font").html(utils.fixConsole(data)));
+        element.append(toinsert);
+        return element;
+    };
 
 
-CodeCell.prototype.append_latex = function (latex, element) {
-    // This method cannot do the typesetting because the latex first has to
-    // be on the page.
-    element = element || this.element.find("div.output");
-    var toinsert = $("<div/>").addClass("output_area output_latex monospace-font");
-    toinsert.append(latex);
-    element.append(toinsert);
-    return element;
-}
+    CodeCell.prototype.append_svg = function (svg, element) {
+        element = element || this.element.find("div.output");
+        var toinsert = $("<div/>").addClass("output_area output_svg");
+        toinsert.append(svg);
+        element.append(toinsert);
+        return element;
+    };
 
 
-CodeCell.prototype.clear_output = function () {
-    this.element.find("div.output").html("");
-};
+    CodeCell.prototype.append_png = function (png, element) {
+        element = element || this.element.find("div.output");
+        var toinsert = $("<div/>").addClass("output_area output_png");
+        toinsert.append($("<img/>").attr('src','data:image/png;base64,'+png));
+        element.append(toinsert);
+        return element;
+    };
 
 
-CodeCell.prototype.collapse = function () {
-    this.element.find('div.output').hide();
-};
+    CodeCell.prototype.append_latex = function (latex, element) {
+        // This method cannot do the typesetting because the latex first has to
+        // be on the page.
+        element = element || this.element.find("div.output");
+        var toinsert = $("<div/>").addClass("output_area output_latex monospace-font");
+        toinsert.append(latex);
+        element.append(toinsert);
+        return element;
+    }
 
 
-CodeCell.prototype.expand = function () {
-    this.element.find('div.output').show();
-};
+    CodeCell.prototype.clear_output = function () {
+        this.element.find("div.output").html("");
+    };
 
 
-CodeCell.prototype.set_input_prompt = function (number) {
-    var n = number || ' ';
-    this.input_prompt_number = n
-    this.element.find('div.input_prompt').html('In&nbsp;[' + n + ']:');
-};
+    CodeCell.prototype.collapse = function () {
+        this.element.find('div.output').hide();
+    };
 
 
-CodeCell.prototype.get_code = function () {
-    return this.code_mirror.getValue();
-};
+    CodeCell.prototype.expand = function () {
+        this.element.find('div.output').show();
+    };
 
 
-CodeCell.prototype.set_code = function (code) {
-    return this.code_mirror.setValue(code);
-};
+    CodeCell.prototype.set_input_prompt = function (number) {
+        var n = number || ' ';
+        this.input_prompt_number = n
+        this.element.find('div.input_prompt').html('In&nbsp;[' + n + ']:');
+    };
 
 
-CodeCell.prototype.at_top = function () {
-    var cursor = this.code_mirror.getCursor();
-    if (cursor.line === 0) {
-        return true;
-    } else {
-        return false;
-    }
-};
+    CodeCell.prototype.get_code = function () {
+        return this.code_mirror.getValue();
+    };
 
 
-CodeCell.prototype.at_bottom = function () {
-    var cursor = this.code_mirror.getCursor();
-    if (cursor.line === (this.code_mirror.lineCount()-1)) {
-        return true;
-    } else {
-        return false;
-    }
-};
+    CodeCell.prototype.set_code = function (code) {
+        return this.code_mirror.setValue(code);
+    };
 
 
-CodeCell.prototype.fromJSON = function (data) {
-    if (data.cell_type === 'code') {
-        this.set_code(data.code);
-        this.set_input_prompt(data.prompt_number);
+    CodeCell.prototype.at_top = function () {
+        var cursor = this.code_mirror.getCursor();
+        if (cursor.line === 0) {
+            return true;
+        } else {
+            return false;
+        }
     };
-};
 
 
-CodeCell.prototype.toJSON = function () {
-    return {
-        code : this.get_code(),
-        cell_type : 'code',
-        prompt_number : this.input_prompt_number
+    CodeCell.prototype.at_bottom = function () {
+        var cursor = this.code_mirror.getCursor();
+        if (cursor.line === (this.code_mirror.lineCount()-1)) {
+            return true;
+        } else {
+            return false;
+        }
     };
-};
 
 
+    CodeCell.prototype.fromJSON = function (data) {
+        if (data.cell_type === 'code') {
+            this.set_code(data.code);
+            this.set_input_prompt(data.prompt_number);
+        };
+    };
+
+
+    CodeCell.prototype.toJSON = function () {
+        return {
+            code : this.get_code(),
+            cell_type : 'code',
+            prompt_number : this.input_prompt_number
+        };
+    };
+
+    IPython.CodeCell = CodeCell;
+
+    return IPython;
+}(IPython));
+
diff --git a/IPython/frontend/html/notebook/static/js/kernel.js b/IPython/frontend/html/notebook/static/js/kernel.js
index 0692045..ebde1d0 100644
--- a/IPython/frontend/html/notebook/static/js/kernel.js
+++ b/IPython/frontend/html/notebook/static/js/kernel.js
@@ -3,105 +3,113 @@
 // Kernel
 //============================================================================
 
+var IPython = (function (IPython) {
 
-var Kernel = function () {
-    this.kernel_id = null;
-    this.base_url = "/kernels";
-    this.kernel_url = null;
-};
-
-
-Kernel.prototype.get_msg = function (msg_type, content) {
-    var msg = {
-        header : {
-            msg_id : uuid(),
-            username : "bgranger",
-            session: this.session_id,
-            msg_type : msg_type
-        },
-        content : content,
-        parent_header : {}
+    var utils = IPython.utils;
+
+    var Kernel = function () {
+        this.kernel_id = null;
+        this.base_url = "/kernels";
+        this.kernel_url = null;
+    };
+
+
+    Kernel.prototype.get_msg = function (msg_type, content) {
+        var msg = {
+            header : {
+                msg_id : utils.uuid(),
+                username : "bgranger",
+                session: this.session_id,
+                msg_type : msg_type
+            },
+            content : content,
+            parent_header : {}
+        };
+        return msg;
+    }
+
+    Kernel.prototype.start_kernel = function (callback, context) {
+        var that = this;
+        $.post(this.base_url,
+            function (kernel_id) {
+                that._handle_start_kernel(kernel_id, callback, context);
+            }, 
+            'json'
+        );
+    };
+
+
+    Kernel.prototype._handle_start_kernel = function (kernel_id, callback, context) {
+        this.kernel_id = kernel_id;
+        this.kernel_url = this.base_url + "/" + this.kernel_id;
+        this._start_channels();
+        callback.call(context);
+    };
+
+
+    Kernel.prototype._start_channels = function () {
+        var ws_url = "ws://127.0.0.1:8888" + this.kernel_url;
+        this.shell_channel = new WebSocket(ws_url + "/shell");
+        this.iopub_channel = new WebSocket(ws_url + "/iopub");
+    }
+
+
+    Kernel.prototype.execute = function (code) {
+        var content = {
+            code : code,
+            silent : false,
+            user_variables : [],
+            user_expressions : {}
+        };
+        var msg = this.get_msg("execute_request", content);
+        this.shell_channel.send(JSON.stringify(msg));
+        return msg.header.msg_id;
+    }
+
+
+    Kernel.prototype.interrupt = function () {
+        $.post(this.kernel_url + "/interrupt");
     };
-    return msg;
-}
-
-Kernel.prototype.start_kernel = function (callback, context) {
-    var that = this;
-    $.post(this.base_url,
-        function (kernel_id) {
-            that._handle_start_kernel(kernel_id, callback, context);
-        }, 
-        'json'
-    );
-};
-
-
-Kernel.prototype._handle_start_kernel = function (kernel_id, callback, context) {
-    this.kernel_id = kernel_id;
-    this.kernel_url = this.base_url + "/" + this.kernel_id;
-    this._start_channels();
-    callback.call(context);
-};
-
-
-Kernel.prototype._start_channels = function () {
-    var ws_url = "ws://127.0.0.1:8888" + this.kernel_url;
-    this.shell_channel = new WebSocket(ws_url + "/shell");
-    this.iopub_channel = new WebSocket(ws_url + "/iopub");
-}
-
-
-Kernel.prototype.execute = function (code) {
-    var content = {
-        code : code,
-        silent : false,
-        user_variables : [],
-        user_expressions : {}
+
+
+    Kernel.prototype.restart = function () {
+        this.status_restarting();
+        url = this.kernel_url + "/restart"
+        var that = this;
+        $.post(url, function (kernel_id) {
+            console.log("Kernel restarted: " + kernel_id);
+            that.kernel_id = kernel_id;
+            that.kernel_url = that.base_url + "/" + that.kernel_id;
+            that.status_idle();
+        }, 'json');
     };
-    var msg = this.get_msg("execute_request", content);
-    this.shell_channel.send(JSON.stringify(msg));
-    return msg.header.msg_id;
-}
-
-
-Kernel.prototype.interrupt = function () {
-    $.post(this.kernel_url + "/interrupt");
-};
-
-
-Kernel.prototype.restart = function () {
-    this.status_restarting();
-    url = this.kernel_url + "/restart"
-    var that = this;
-    $.post(url, function (kernel_id) {
-        console.log("Kernel restarted: " + kernel_id);
-        that.kernel_id = kernel_id;
-        that.kernel_url = that.base_url + "/" + that.kernel_id;
-        that.status_idle();
-    }, 'json');
-};
-
-
-Kernel.prototype.status_busy = function () {
-    $("#kernel_status").removeClass("status_idle");
-    $("#kernel_status").removeClass("status_restarting");
-    $("#kernel_status").addClass("status_busy");
-    $("#kernel_status").text("Busy");
-};
-
-
-Kernel.prototype.status_idle = function () {
-    $("#kernel_status").removeClass("status_busy");
-    $("#kernel_status").removeClass("status_restarting");
-    $("#kernel_status").addClass("status_idle");
-    $("#kernel_status").text("Idle");
-};
-
-Kernel.prototype.status_restarting = function () {
-    $("#kernel_status").removeClass("status_busy");
-    $("#kernel_status").removeClass("status_idle");
-    $("#kernel_status").addClass("status_restarting");
-    $("#kernel_status").text("Restarting");
-};
 
 
+    Kernel.prototype.status_busy = function () {
+        $("#kernel_status").removeClass("status_idle");
+        $("#kernel_status").removeClass("status_restarting");
+        $("#kernel_status").addClass("status_busy");
+        $("#kernel_status").text("Busy");
+    };
+
+
+    Kernel.prototype.status_idle = function () {
+        $("#kernel_status").removeClass("status_busy");
+        $("#kernel_status").removeClass("status_restarting");
+        $("#kernel_status").addClass("status_idle");
+        $("#kernel_status").text("Idle");
+    };
+
+    Kernel.prototype.status_restarting = function () {
+        $("#kernel_status").removeClass("status_busy");
+        $("#kernel_status").removeClass("status_idle");
+        $("#kernel_status").addClass("status_restarting");
+        $("#kernel_status").text("Restarting");
+    };
+
+    IPython.Kernel = Kernel;
+
+    return IPython;
+
+}(IPython));
+
diff --git a/IPython/frontend/html/notebook/static/js/namespace.js b/IPython/frontend/html/notebook/static/js/namespace.js
index d28851e..754f0b9 100644
--- a/IPython/frontend/html/notebook/static/js/namespace.js
+++ b/IPython/frontend/html/notebook/static/js/namespace.js
@@ -1,4 +1,23 @@
-var IPYTHON = {};
+var IPython = IPython || {};
+
+IPython.namespace = function (ns_string) {
+    var parts = ns_string.split('.'),
+        parent = IPython,
+        i;
+
+    // String redundant leading global
+    if (parts[0] === "IPython") {
+        parts = parts.slice(1);
+    }
+
+    for (i=0; i<parts.length; i+=1) {
+        // Create property if it doesn't exist
+        if (typeof parent[parts[i]] === "undefined") {
+            parent[parts[i]] == {};
+        }
+    }
+    return parent;
+};
 
 
 
diff --git a/IPython/frontend/html/notebook/static/js/notebook.js b/IPython/frontend/html/notebook/static/js/notebook.js
index 53d92b1..2daebda 100644
--- a/IPython/frontend/html/notebook/static/js/notebook.js
+++ b/IPython/frontend/html/notebook/static/js/notebook.js
@@ -3,506 +3,513 @@
 // Notebook
 //============================================================================
 
+var IPython = (function (IPython) {
+
+    var Notebook = function (selector) {
+        this.element = $(selector);
+        this.element.scroll();
+        this.element.data("notebook", this);
+        this.next_prompt_number = 1;
+        this.kernel = null;
+        this.msg_cell_map = {};
+        this.filename = null;
+        this.notebook_load_re = /%notebook load/
+        this.notebook_save_re = /%notebook save/
+        this.notebook_filename_re = /(\w)+.ipynb/
+        this.bind_events();
+        this.start_kernel();
+    };
 
-var Notebook = function (selector) {
-    this.element = $(selector);
-    this.element.scroll();
-    this.element.data("notebook", this);
-    this.next_prompt_number = 1;
-    this.kernel = null;
-    this.msg_cell_map = {};
-    this.filename = null;
-    this.notebook_load_re = /%notebook load/
-    this.notebook_save_re = /%notebook save/
-    this.notebook_filename_re = /(\w)+.ipynb/
-    this.bind_events();
-    this.start_kernel();
-};
-
-
-Notebook.prototype.bind_events = function () {
-    var that = this;
-    $(document).keydown(function (event) {
-        // console.log(event);
-        if (event.which === 38) {
-            var cell = that.selected_cell();
-            if (cell.at_top()) {
-                event.preventDefault();
-                that.select_prev();
-            };
-        } else if (event.which === 40) {
-            var cell = that.selected_cell();
-            if (cell.at_bottom()) {
-                event.preventDefault();
-                that.select_next();
-            };
-        } else if (event.which === 13 && event.shiftKey) {
-            // The focus is not quite working here.
-            var cell = that.selected_cell();
-            var cell_index = that.find_cell_index(cell);
-            // TODO: the logic here needs to be moved into appropriate
-            // methods of Notebook.
-            if (cell instanceof CodeCell) {
-                event.preventDefault();
-                cell.clear_output();
-                var code = cell.get_code();
-                if (that.notebook_load_re.test(code)) {
-                    var code_parts = code.split(' ');
-                    if (code_parts.length === 3) {
-                        that.load_notebook(code_parts[2]);
-                    };
-                } else if (that.notebook_save_re.test(code)) {
-                    var code_parts = code.split(' ');
-                    if (code_parts.length === 3) {
-                        that.save_notebook(code_parts[2]);
+
+    Notebook.prototype.bind_events = function () {
+        var that = this;
+        $(document).keydown(function (event) {
+            // console.log(event);
+            if (event.which === 38) {
+                var cell = that.selected_cell();
+                if (cell.at_top()) {
+                    event.preventDefault();
+                    that.select_prev();
+                };
+            } else if (event.which === 40) {
+                var cell = that.selected_cell();
+                if (cell.at_bottom()) {
+                    event.preventDefault();
+                    that.select_next();
+                };
+            } else if (event.which === 13 && event.shiftKey) {
+                // The focus is not quite working here.
+                var cell = that.selected_cell();
+                var cell_index = that.find_cell_index(cell);
+                // TODO: the logic here needs to be moved into appropriate
+                // methods of Notebook.
+                if (cell instanceof IPython.CodeCell) {
+                    event.preventDefault();
+                    cell.clear_output();
+                    var code = cell.get_code();
+                    if (that.notebook_load_re.test(code)) {
+                        var code_parts = code.split(' ');
+                        if (code_parts.length === 3) {
+                            that.load_notebook(code_parts[2]);
+                        };
+                    } else if (that.notebook_save_re.test(code)) {
+                        var code_parts = code.split(' ');
+                        if (code_parts.length === 3) {
+                            that.save_notebook(code_parts[2]);
+                        } else {
+                            that.save_notebook()
+                        };
                     } else {
-                        that.save_notebook()
+                        var msg_id = that.kernel.execute(cell.get_code());
+                        that.msg_cell_map[msg_id] = cell.cell_id;
                     };
+                } else if (cell instanceof IPython.TextCell) {
+                    event.preventDefault();
+                    cell.render();
+                }
+                if (cell_index === (that.ncells()-1)) {
+                    that.insert_code_cell_after();
                 } else {
-                    var msg_id = that.kernel.execute(cell.get_code());
-                    that.msg_cell_map[msg_id] = cell.cell_id;
+                    that.select(cell_index+1);
                 };
-            } else if (cell instanceof TextCell) {
-                event.preventDefault();
-                cell.render();
-            }
-            if (cell_index === (that.ncells()-1)) {
-                that.insert_code_cell_after();
-            } else {
-                that.select(cell_index+1);
             };
-        };
-    });
-};
+        });
+    };
 
 
-// Cell indexing, retrieval, etc.
+    // Cell indexing, retrieval, etc.
 
 
-Notebook.prototype.cell_elements = function () {
-    return this.element.children("div.cell");
-}
+    Notebook.prototype.cell_elements = function () {
+        return this.element.children("div.cell");
+    }
 
 
-Notebook.prototype.ncells = function (cell) {
-    return this.cell_elements().length;
-}
+    Notebook.prototype.ncells = function (cell) {
+        return this.cell_elements().length;
+    }
 
 
-// TODO: we are often calling cells as cells()[i], which we should optimize
-// to cells(i) or a new method.
-Notebook.prototype.cells = function () {
-    return this.cell_elements().toArray().map(function (e) {
-        return $(e).data("cell");
-    });
-}
+    // TODO: we are often calling cells as cells()[i], which we should optimize
+    // to cells(i) or a new method.
+    Notebook.prototype.cells = function () {
+        return this.cell_elements().toArray().map(function (e) {
+            return $(e).data("cell");
+        });
+    }
 
 
-Notebook.prototype.find_cell_index = function (cell) {
-    var result = null;
-    this.cell_elements().filter(function (index) {
-        if ($(this).data("cell") === cell) {
-            result = index;
-        };
-    });
-    return result;
-};
+    Notebook.prototype.find_cell_index = function (cell) {
+        var result = null;
+        this.cell_elements().filter(function (index) {
+            if ($(this).data("cell") === cell) {
+                result = index;
+            };
+        });
+        return result;
+    };
 
 
-Notebook.prototype.index_or_selected = function (index) {
-    return index || this.selected_index() || 0;
-}
+    Notebook.prototype.index_or_selected = function (index) {
+        return index || this.selected_index() || 0;
+    }
 
 
-Notebook.prototype.select = function (index) {
-    if (index !== undefined && index >= 0 && index < this.ncells()) {
-        if (this.selected_index() !== null) {
-            this.selected_cell().unselect();
+    Notebook.prototype.select = function (index) {
+        if (index !== undefined && index >= 0 && index < this.ncells()) {
+            if (this.selected_index() !== null) {
+                this.selected_cell().unselect();
+            };
+            this.cells()[index].select();
         };
-        this.cells()[index].select();
-    };
-    return this;
-};
-
-
-Notebook.prototype.select_next = function () {
-    var index = this.selected_index();
-    if (index !== null && index >= 0 && (index+1) < this.ncells()) {
-        this.select(index+1);
+        return this;
     };
-    return this;
-};
 
 
-Notebook.prototype.select_prev = function () {
-    var index = this.selected_index();
-    if (index !== null && index >= 0 && (index-1) < this.ncells()) {
-        this.select(index-1);
+    Notebook.prototype.select_next = function () {
+        var index = this.selected_index();
+        if (index !== null && index >= 0 && (index+1) < this.ncells()) {
+            this.select(index+1);
+        };
+        return this;
     };
-    return this;
-};
 
 
-Notebook.prototype.selected_index = function () {
-    var result = null;
-    this.cell_elements().filter(function (index) {
-        if ($(this).data("cell").selected === true) {
-            result = index;
-        };
-    });
-    return result;
-};
-
-
-Notebook.prototype.cell_for_msg = function (msg_id) {
-    var cell_id = this.msg_cell_map[msg_id];
-    var result = null;
-    this.cell_elements().filter(function (index) {
-        cell = $(this).data("cell");
-        if (cell.cell_id === cell_id) {
-            result = cell;
+    Notebook.prototype.select_prev = function () {
+        var index = this.selected_index();
+        if (index !== null && index >= 0 && (index-1) < this.ncells()) {
+            this.select(index-1);
         };
-    });
-    return result;
-};
+        return this;
+    };
 
 
-Notebook.prototype.selected_cell = function () {
-    return this.cell_elements().eq(this.selected_index()).data("cell");
-}
+    Notebook.prototype.selected_index = function () {
+        var result = null;
+        this.cell_elements().filter(function (index) {
+            if ($(this).data("cell").selected === true) {
+                result = index;
+            };
+        });
+        return result;
+    };
 
 
-// Cell insertion, deletion and moving.
+    Notebook.prototype.cell_for_msg = function (msg_id) {
+        var cell_id = this.msg_cell_map[msg_id];
+        var result = null;
+        this.cell_elements().filter(function (index) {
+            cell = $(this).data("cell");
+            if (cell.cell_id === cell_id) {
+                result = cell;
+            };
+        });
+        return result;
+    };
 
 
-Notebook.prototype.delete_cell = function (index) {
-    var i = index || this.selected_index();
-    if (i !== null && i >= 0 && i < this.ncells()) {
-        this.cell_elements().eq(i).remove();
-        if (i === (this.ncells())) {
-            this.select(i-1);
-        } else {
-            this.select(i);
-        };
-    };
-    return this;
-};
+    Notebook.prototype.selected_cell = function () {
+        return this.cell_elements().eq(this.selected_index()).data("cell");
+    }
 
 
-Notebook.prototype.append_cell = function (cell) {
-    this.element.append(cell.element);
-    return this;
-};
+    // Cell insertion, deletion and moving.
 
 
-Notebook.prototype.insert_cell_after = function (cell, index) {
-    var ncells = this.ncells();
-    if (ncells === 0) {
-        this.append_cell(cell);
+    Notebook.prototype.delete_cell = function (index) {
+        var i = index || this.selected_index();
+        if (i !== null && i >= 0 && i < this.ncells()) {
+            this.cell_elements().eq(i).remove();
+            if (i === (this.ncells())) {
+                this.select(i-1);
+            } else {
+                this.select(i);
+            };
+        };
         return this;
     };
-    if (index >= 0 && index < ncells) {
-        this.cell_elements().eq(index).after(cell.element);
-    };
-    return this
-};
 
 
-Notebook.prototype.insert_cell_before = function (cell, index) {
-    var ncells = this.ncells();
-    if (ncells === 0) {
-        this.append_cell(cell);
+    Notebook.prototype.append_cell = function (cell) {
+        this.element.append(cell.element);
         return this;
     };
-    if (index >= 0 && index < ncells) {
-        this.cell_elements().eq(index).before(cell.element);
-    };
-    return this;
-};
-
-
-Notebook.prototype.move_cell_up = function (index) {
-    var i = index || this.selected_index();
-    if (i !== null && i < this.ncells() && i > 0) {
-        var pivot = this.cell_elements().eq(i-1);
-        var tomove = this.cell_elements().eq(i);
-        if (pivot !== null && tomove !== null) {
-            tomove.detach();
-            pivot.before(tomove);
-            this.select(i-1);
+
+
+    Notebook.prototype.insert_cell_after = function (cell, index) {
+        var ncells = this.ncells();
+        if (ncells === 0) {
+            this.append_cell(cell);
+            return this;
         };
+        if (index >= 0 && index < ncells) {
+            this.cell_elements().eq(index).after(cell.element);
+        };
+        return this
     };
-    return this;
-}
-
-
-Notebook.prototype.move_cell_down = function (index) {
-    var i = index || this.selected_index();
-    if (i !== null && i < (this.ncells()-1) && i >= 0) {
-        var pivot = this.cell_elements().eq(i+1)
-        var tomove = this.cell_elements().eq(i)
-        if (pivot !== null && tomove !== null) {
-            tomove.detach();
-            pivot.after(tomove);
-            this.select(i+1);
+
+
+    Notebook.prototype.insert_cell_before = function (cell, index) {
+        var ncells = this.ncells();
+        if (ncells === 0) {
+            this.append_cell(cell);
+            return this;
+        };
+        if (index >= 0 && index < ncells) {
+            this.cell_elements().eq(index).before(cell.element);
         };
+        return this;
     };
-    return this;
-}
-
-
-Notebook.prototype.sort_cells = function () {
-    var ncells = this.ncells();
-    var sindex = this.selected_index();
-    var swapped;
-    do {
-        swapped = false
-        for (var i=1; i<ncells; i++) {
-            current = this.cell_elements().eq(i).data("cell");
-            previous = this.cell_elements().eq(i-1).data("cell");
-            if (previous.input_prompt_number > current.input_prompt_number) {
-                this.move_cell_up(i);
-                swapped = true;
+
+
+    Notebook.prototype.move_cell_up = function (index) {
+        var i = index || this.selected_index();
+        if (i !== null && i < this.ncells() && i > 0) {
+            var pivot = this.cell_elements().eq(i-1);
+            var tomove = this.cell_elements().eq(i);
+            if (pivot !== null && tomove !== null) {
+                tomove.detach();
+                pivot.before(tomove);
+                this.select(i-1);
             };
         };
-    } while (swapped);
-    this.select(sindex);
-    return this;
-};
-
-
-Notebook.prototype.insert_code_cell_before = function (index) {
-    // TODO: Bounds check for i
-    var i = this.index_or_selected(index);
-    var cell = new CodeCell(this);
-    cell.set_input_prompt(this.next_prompt_number);
-    this.next_prompt_number = this.next_prompt_number + 1;
-    this.insert_cell_before(cell, i);
-    this.select(this.find_cell_index(cell));
-    return this;
-}
-
-
-Notebook.prototype.insert_code_cell_after = function (index) {
-    // TODO: Bounds check for i
-    var i = this.index_or_selected(index);
-    var cell = new CodeCell(this);
-    cell.set_input_prompt(this.next_prompt_number);
-    this.next_prompt_number = this.next_prompt_number + 1;
-    this.insert_cell_after(cell, i);
-    this.select(this.find_cell_index(cell));
-    return this;
-}
-
-
-Notebook.prototype.insert_text_cell_before = function (index) {
-    // TODO: Bounds check for i
-    var i = this.index_or_selected(index);
-    var cell = new TextCell(this);
-    cell.config_mathjax();
-    this.insert_cell_before(cell, i);
-    this.select(this.find_cell_index(cell));
-    return this;
-}
-
-
-Notebook.prototype.insert_text_cell_after = function (index) {
-    // TODO: Bounds check for i
-    var i = this.index_or_selected(index);
-    var cell = new TextCell(this);
-    cell.config_mathjax();
-    this.insert_cell_after(cell, i);
-    this.select(this.find_cell_index(cell));
-    return this;
-}
-
-
-Notebook.prototype.text_to_code = function (index) {
-    // TODO: Bounds check for i
-    var i = this.index_or_selected(index);
-    var source_element = this.cell_elements().eq(i);
-    var source_cell = source_element.data("cell");
-    if (source_cell instanceof TextCell) {
-        this.insert_code_cell_after(i);
-        var target_cell = this.cells()[i+1];
-        target_cell.set_code(source_cell.get_text());
-        source_element.remove();
-    };
-};
-
-
-Notebook.prototype.code_to_text = function (index) {
-    // TODO: Bounds check for i
-    var i = this.index_or_selected(index);
-    var source_element = this.cell_elements().eq(i);
-    var source_cell = source_element.data("cell");
-    if (source_cell instanceof CodeCell) {
-        this.insert_text_cell_after(i);
-        var target_cell = this.cells()[i+1];
-        var text = source_cell.get_code();
-        if (text === "") {text = target_cell.placeholder;};
-        target_cell.set_text(text);
-        source_element.remove();
-        target_cell.edit();
+        return this;
+    }
+
+
+    Notebook.prototype.move_cell_down = function (index) {
+        var i = index || this.selected_index();
+        if (i !== null && i < (this.ncells()-1) && i >= 0) {
+            var pivot = this.cell_elements().eq(i+1)
+            var tomove = this.cell_elements().eq(i)
+            if (pivot !== null && tomove !== null) {
+                tomove.detach();
+                pivot.after(tomove);
+                this.select(i+1);
+            };
+        };
+        return this;
+    }
+
+
+    Notebook.prototype.sort_cells = function () {
+        var ncells = this.ncells();
+        var sindex = this.selected_index();
+        var swapped;
+        do {
+            swapped = false
+            for (var i=1; i<ncells; i++) {
+                current = this.cell_elements().eq(i).data("cell");
+                previous = this.cell_elements().eq(i-1).data("cell");
+                if (previous.input_prompt_number > current.input_prompt_number) {
+                    this.move_cell_up(i);
+                    swapped = true;
+                };
+            };
+        } while (swapped);
+        this.select(sindex);
+        return this;
     };
-};
 
 
-// Cell collapsing
+    Notebook.prototype.insert_code_cell_before = function (index) {
+        // TODO: Bounds check for i
+        var i = this.index_or_selected(index);
+        var cell = new IPython.CodeCell(this);
+        cell.set_input_prompt(this.next_prompt_number);
+        this.next_prompt_number = this.next_prompt_number + 1;
+        this.insert_cell_before(cell, i);
+        this.select(this.find_cell_index(cell));
+        return this;
+    }
 
-Notebook.prototype.collapse = function (index) {
-    var i = this.index_or_selected(index);
-    this.cells()[i].collapse();
-};
 
+    Notebook.prototype.insert_code_cell_after = function (index) {
+        // TODO: Bounds check for i
+        var i = this.index_or_selected(index);
+        var cell = new IPython.CodeCell(this);
+        cell.set_input_prompt(this.next_prompt_number);
+        this.next_prompt_number = this.next_prompt_number + 1;
+        this.insert_cell_after(cell, i);
+        this.select(this.find_cell_index(cell));
+        return this;
+    }
 
-Notebook.prototype.expand = function (index) {
-    var i = this.index_or_selected(index);
-    this.cells()[i].expand();
-};
 
+    Notebook.prototype.insert_text_cell_before = function (index) {
+        // TODO: Bounds check for i
+        var i = this.index_or_selected(index);
+        var cell = new IPython.TextCell(this);
+        cell.config_mathjax();
+        this.insert_cell_before(cell, i);
+        this.select(this.find_cell_index(cell));
+        return this;
+    }
 
-// Kernel related things
 
-Notebook.prototype.start_kernel = function () {
-    this.kernel = new Kernel();
-    this.kernel.start_kernel(this._kernel_started, this);
-};
+    Notebook.prototype.insert_text_cell_after = function (index) {
+        // TODO: Bounds check for i
+        var i = this.index_or_selected(index);
+        var cell = new IPython.TextCell(this);
+        cell.config_mathjax();
+        this.insert_cell_after(cell, i);
+        this.select(this.find_cell_index(cell));
+        return this;
+    }
 
 
-Notebook.prototype._kernel_started = function () {
-    console.log("Kernel started: ", this.kernel.kernel_id);
-    var that = this;
+    Notebook.prototype.text_to_code = function (index) {
+        // TODO: Bounds check for i
+        var i = this.index_or_selected(index);
+        var source_element = this.cell_elements().eq(i);
+        var source_cell = source_element.data("cell");
+        if (source_cell instanceof IPython.TextCell) {
+            this.insert_code_cell_after(i);
+            var target_cell = this.cells()[i+1];
+            target_cell.set_code(source_cell.get_text());
+            source_element.remove();
+        };
+    };
 
-    this.kernel.shell_channel.onmessage = function (e) {
-        reply = $.parseJSON(e.data);
-        // console.log(reply);
-        var msg_type = reply.header.msg_type;
-        var cell = that.cell_for_msg(reply.parent_header.msg_id);
-        if (msg_type === "execute_reply") {
-            cell.set_input_prompt(reply.content.execution_count);
+
+    Notebook.prototype.code_to_text = function (index) {
+        // TODO: Bounds check for i
+        var i = this.index_or_selected(index);
+        var source_element = this.cell_elements().eq(i);
+        var source_cell = source_element.data("cell");
+        if (source_cell instanceof IPython.CodeCell) {
+            this.insert_text_cell_after(i);
+            var target_cell = this.cells()[i+1];
+            var text = source_cell.get_code();
+            if (text === "") {text = target_cell.placeholder;};
+            target_cell.set_text(text);
+            source_element.remove();
+            target_cell.edit();
         };
     };
 
-    this.kernel.iopub_channel.onmessage = function (e) {
-        reply = $.parseJSON(e.data);
-        var content = reply.content;
-        console.log(reply);
-        var msg_type = reply.header.msg_type;
-        var cell = that.cell_for_msg(reply.parent_header.msg_id);
-        if (msg_type === "stream") {
-            cell.expand();
-            cell.append_stream(content.data + "\n");
-        } else if (msg_type === "display_data") {
-            cell.expand();
-            cell.append_display_data(content.data);
-        } else if (msg_type === "pyout") {
-            cell.expand();
-            cell.append_pyout(content.data, content.execution_count)
-        } else if (msg_type === "pyerr") {
-            cell.expand();
-            cell.append_pyerr(content.ename, content.evalue, content.traceback);
-        } else if (msg_type === "status") {
-            if (content.execution_state === "busy") {
-                that.kernel.status_busy();
-            } else if (content.execution_state === "idle") {
-                that.kernel.status_idle();
-            };
-        }
+
+    // Cell collapsing
+
+    Notebook.prototype.collapse = function (index) {
+        var i = this.index_or_selected(index);
+        this.cells()[i].collapse();
     };
-};
 
 
-// Persistance and loading
+    Notebook.prototype.expand = function (index) {
+        var i = this.index_or_selected(index);
+        this.cells()[i].expand();
+    };
+
 
+    // Kernel related things
 
-Notebook.prototype.fromJSON = function (data) {
-    var ncells = this.ncells();
-    for (var i=0; i<ncells; i++) {
-        // Always delete cell 0 as they get renumbered as they are deleted.
-        this.delete_cell(0);
+    Notebook.prototype.start_kernel = function () {
+        this.kernel = new IPython.Kernel();
+        this.kernel.start_kernel(this._kernel_started, this);
     };
-    var new_cells = data.cells;
-    ncells = new_cells.length;
-    var cell_data = null;
-    for (var i=0; i<ncells; i++) {
-        cell_data = new_cells[i];
-        if (cell_data.cell_type == 'code') {
-            this.insert_code_cell_after();
-            this.selected_cell().fromJSON(cell_data);
-        } else if (cell_data.cell_type === 'text') {
-            this.insert_text_cell_after();
-            this.selected_cell().fromJSON(cell_data);
+
+
+    Notebook.prototype._kernel_started = function () {
+        console.log("Kernel started: ", this.kernel.kernel_id);
+        var that = this;
+
+        this.kernel.shell_channel.onmessage = function (e) {
+            reply = $.parseJSON(e.data);
+            // console.log(reply);
+            var msg_type = reply.header.msg_type;
+            var cell = that.cell_for_msg(reply.parent_header.msg_id);
+            if (msg_type === "execute_reply") {
+                cell.set_input_prompt(reply.content.execution_count);
+            };
+        };
+
+        this.kernel.iopub_channel.onmessage = function (e) {
+            reply = $.parseJSON(e.data);
+            var content = reply.content;
+            // console.log(reply);
+            var msg_type = reply.header.msg_type;
+            var cell = that.cell_for_msg(reply.parent_header.msg_id);
+            if (msg_type === "stream") {
+                cell.expand();
+                cell.append_stream(content.data + "\n");
+            } else if (msg_type === "display_data") {
+                cell.expand();
+                cell.append_display_data(content.data);
+            } else if (msg_type === "pyout") {
+                cell.expand();
+                cell.append_pyout(content.data, content.execution_count)
+            } else if (msg_type === "pyerr") {
+                cell.expand();
+                cell.append_pyerr(content.ename, content.evalue, content.traceback);
+            } else if (msg_type === "status") {
+                if (content.execution_state === "busy") {
+                    that.kernel.status_busy();
+                } else if (content.execution_state === "idle") {
+                    that.kernel.status_idle();
+                };
+            }
         };
     };
-};
 
 
-Notebook.prototype.toJSON = function () {
-    var cells = this.cells();
-    var ncells = cells.length;
-    cell_array = new Array(ncells);
-    for (var i=0; i<ncells; i++) {
-        cell_array[i] = cells[i].toJSON();
-    };
-    json = {
-        cells : cell_array
+    // Persistance and loading
+
+
+    Notebook.prototype.fromJSON = function (data) {
+        var ncells = this.ncells();
+        for (var i=0; i<ncells; i++) {
+            // Always delete cell 0 as they get renumbered as they are deleted.
+            this.delete_cell(0);
+        };
+        var new_cells = data.cells;
+        ncells = new_cells.length;
+        var cell_data = null;
+        for (var i=0; i<ncells; i++) {
+            cell_data = new_cells[i];
+            if (cell_data.cell_type == 'code') {
+                this.insert_code_cell_after();
+                this.selected_cell().fromJSON(cell_data);
+            } else if (cell_data.cell_type === 'text') {
+                this.insert_text_cell_after();
+                this.selected_cell().fromJSON(cell_data);
+            };
+        };
     };
-    return json
-};
-
-
-Notebook.prototype.test_filename = function (filename) {
-    if (this.notebook_filename_re.test(filename)) {
-        return true;
-    } else {
-        var bad_filename = $('<div/>');
-        bad_filename.html(
-            "The filename you entered (" + filename + ") is not valid. Notebook filenames must have the following form: foo.ipynb"
-        );
-        bad_filename.dialog({title: 'Invalid filename', modal: true});
-        return false;
+
+
+    Notebook.prototype.toJSON = function () {
+        var cells = this.cells();
+        var ncells = cells.length;
+        cell_array = new Array(ncells);
+        for (var i=0; i<ncells; i++) {
+            cell_array[i] = cells[i].toJSON();
+        };
+        json = {
+            cells : cell_array
+        };
+        return json
     };
-};
-
-Notebook.prototype.save_notebook = function (filename) {
-    this.filename = filename || this.filename || '';
-    if (this.filename === '') {
-        var no_filename = $('<div/>');
-        no_filename.html(
-            "This notebook has no filename, please specify a filename of the form: foo.ipynb"
-        );
-        no_filename.dialog({title: 'Missing filename', modal: true});
-        return;
-    }
-    if (!this.test_filename(this.filename)) {return;}
-    var thedata = this.toJSON();
-    var settings = {
-      processData : false,
-      cache : false,
-      type : "PUT",
-      data : JSON.stringify(thedata),
-      success : function (data, status, xhr) {console.log(data);}
+
+
+    Notebook.prototype.test_filename = function (filename) {
+        if (this.notebook_filename_re.test(filename)) {
+            return true;
+        } else {
+            var bad_filename = $('<div/>');
+            bad_filename.html(
+                "The filename you entered (" + filename + ") is not valid. Notebook filenames must have the following form: foo.ipynb"
+            );
+            bad_filename.dialog({title: 'Invalid filename', modal: true});
+            return false;
+        };
     };
-    $.ajax("/notebooks/" + this.filename, settings);
-};
-
-
-Notebook.prototype.load_notebook = function (filename) {
-    if (!this.test_filename(filename)) {return;}
-    var that = this;
-    // We do the call with settings so we can set cache to false.
-    var settings = {
-      processData : false,
-      cache : false,
-      type : "GET",
-      dataType : "json",
-      success : function (data, status, xhr) {
-          that.fromJSON(data);
-          that.filename = filename;
-          that.kernel.restart();
-      }
+
+    Notebook.prototype.save_notebook = function (filename) {
+        this.filename = filename || this.filename || '';
+        if (this.filename === '') {
+            var no_filename = $('<div/>');
+            no_filename.html(
+                "This notebook has no filename, please specify a filename of the form: foo.ipynb"
+            );
+            no_filename.dialog({title: 'Missing filename', modal: true});
+            return;
+        }
+        if (!this.test_filename(this.filename)) {return;}
+        var thedata = this.toJSON();
+        var settings = {
+          processData : false,
+          cache : false,
+          type : "PUT",
+          data : JSON.stringify(thedata),
+          success : function (data, status, xhr) {console.log(data);}
+        };
+        $.ajax("/notebooks/" + this.filename, settings);
     };
-    $.ajax("/notebooks/" + filename, settings);
-}
+
+
+    Notebook.prototype.load_notebook = function (filename) {
+        if (!this.test_filename(filename)) {return;}
+        var that = this;
+        // We do the call with settings so we can set cache to false.
+        var settings = {
+          processData : false,
+          cache : false,
+          type : "GET",
+          dataType : "json",
+          success : function (data, status, xhr) {
+              that.fromJSON(data);
+              that.filename = filename;
+              that.kernel.restart();
+          }
+        };
+        $.ajax("/notebooks/" + filename, settings);
+    }
+
+    IPython.Notebook = Notebook;
+
+    return IPython;
+
+}(IPython));
 
diff --git a/IPython/frontend/html/notebook/static/js/notebook_main.js b/IPython/frontend/html/notebook/static/js/notebook_main.js
index 5f1f1bc..ab54a2b 100644
--- a/IPython/frontend/html/notebook/static/js/notebook_main.js
+++ b/IPython/frontend/html/notebook/static/js/notebook_main.js
@@ -20,43 +20,43 @@ $(document).ready(function () {
         }
     });
 
-    IPYTHON.notebook = new Notebook('div.notebook');
-    IPYTHON.notebook.insert_code_cell_after();
+    IPython.notebook = new IPython.Notebook('div.notebook');
+    IPython.notebook.insert_code_cell_after();
 
     $("#menu_tabs").tabs();
 
     $("#help_toolbar").buttonset();
 
     $("#kernel_toolbar").buttonset();
-    $("#interrupt_kernel").click(function () {IPYTHON.notebook.kernel.interrupt();});
-    $("#restart_kernel").click(function () {IPYTHON.notebook.kernel.restart();});
+    $("#interrupt_kernel").click(function () {IPython.notebook.kernel.interrupt();});
+    $("#restart_kernel").click(function () {IPython.notebook.kernel.restart();});
     $("#kernel_status").addClass("status_idle");
 
     $("#move_cell").buttonset();
     $("#move_up").button("option", "icons", {primary:"ui-icon-arrowthick-1-n"});
     $("#move_up").button("option", "text", false);
-    $("#move_up").click(function () {IPYTHON.notebook.move_cell_up();});
+    $("#move_up").click(function () {IPython.notebook.move_cell_up();});
     $("#move_down").button("option", "icons", {primary:"ui-icon-arrowthick-1-s"});
     $("#move_down").button("option", "text", false);
-    $("#move_down").click(function () {IPYTHON.notebook.move_cell_down();});
+    $("#move_down").click(function () {IPython.notebook.move_cell_down();});
 
     $("#insert_delete").buttonset();
-    $("#insert_cell_before").click(function () {IPYTHON.notebook.insert_code_cell_before();});
-    $("#insert_cell_after").click(function () {IPYTHON.notebook.insert_code_cell_after();});
+    $("#insert_cell_before").click(function () {IPython.notebook.insert_code_cell_before();});
+    $("#insert_cell_after").click(function () {IPython.notebook.insert_code_cell_after();});
     $("#delete_cell").button("option", "icons", {primary:"ui-icon-closethick"});
     $("#delete_cell").button("option", "text", false);
-    $("#delete_cell").click(function () {IPYTHON.notebook.delete_cell();});
+    $("#delete_cell").click(function () {IPython.notebook.delete_cell();});
 
     $("#cell_type").buttonset();
-    $("#to_code").click(function () {IPYTHON.notebook.text_to_code();});
-    $("#to_text").click(function () {IPYTHON.notebook.code_to_text();});
+    $("#to_code").click(function () {IPython.notebook.text_to_code();});
+    $("#to_text").click(function () {IPython.notebook.code_to_text();});
 
     $("#sort").buttonset();
-    $("#sort_cells").click(function () {IPYTHON.notebook.sort_cells();});
+    $("#sort_cells").click(function () {IPython.notebook.sort_cells();});
 
     $("#toggle").buttonset();
-    $("#collapse").click(function () {IPYTHON.notebook.collapse();});
-    $("#expand").click(function () {IPYTHON.notebook.expand();});
+    $("#collapse").click(function () {IPython.notebook.collapse();});
+    $("#expand").click(function () {IPython.notebook.expand();});
 
 });
 
diff --git a/IPython/frontend/html/notebook/static/js/textcell.js b/IPython/frontend/html/notebook/static/js/textcell.js
index b181278..987a2c6 100644
--- a/IPython/frontend/html/notebook/static/js/textcell.js
+++ b/IPython/frontend/html/notebook/static/js/textcell.js
@@ -3,142 +3,148 @@
 // TextCell
 //============================================================================
 
+var IPython = (function (IPython) {
 
-var TextCell = function (notebook) {
-    Cell.apply(this, arguments);
-    this.placeholder = "Type <strong>HTML</strong> and LaTeX: $\\alpha^2$"
-    this.rendered = false;
-};
-
-
-TextCell.prototype = new Cell();
-
-
-TextCell.prototype.create_element = function () {
-    var cell = $("<div>").addClass('cell text_cell').
-               append(
-                   $("<textarea>" + this.placeholder + "</textarea>").
-                   addClass('text_cell_input monospace-font').
-                   attr('rows',1).
-                   attr('cols',80).
-                   autogrow()
-               ).append(
-                   // The tabindex=-1 makes this div focusable.
-                   $('<div></div>').addClass('text_cell_render').attr('tabindex','-1')
-               )
-    this.element = cell;
-};
-
-
-TextCell.prototype.bind_events = function () {
-    Cell.prototype.bind_events.apply(this);
-    var that = this;
-    this.element.keydown(function (event) {
-        if (event.which === 13) {
-            if (that.rendered) {
-                that.edit();
-                event.preventDefault();
+    var TextCell = function (notebook) {
+        IPython.Cell.apply(this, arguments);
+        this.placeholder = "Type <strong>HTML</strong> and LaTeX: $\\alpha^2$"
+        this.rendered = false;
+    };
+
+
+    TextCell.prototype = new IPython.Cell();
+
+
+    TextCell.prototype.create_element = function () {
+        var cell = $("<div>").addClass('cell text_cell').
+                   append(
+                       $("<textarea>" + this.placeholder + "</textarea>").
+                       addClass('text_cell_input monospace-font').
+                       attr('rows',1).
+                       attr('cols',80).
+                       autogrow()
+                   ).append(
+                       // The tabindex=-1 makes this div focusable.
+                       $('<div></div>').addClass('text_cell_render').attr('tabindex','-1')
+                   )
+        this.element = cell;
+    };
+
+
+    TextCell.prototype.bind_events = function () {
+        IPython.Cell.prototype.bind_events.apply(this);
+        var that = this;
+        this.element.keydown(function (event) {
+            if (event.which === 13) {
+                if (that.rendered) {
+                    that.edit();
+                    event.preventDefault();
+                };
             };
-        };
-    });
-};
+        });
+    };
 
 
-TextCell.prototype.select = function () {
-    Cell.prototype.select.apply(this);
-    var output = this.element.find("div.text_cell_render");
-    output.trigger('focus');
-};
+    TextCell.prototype.select = function () {
+        IPython.Cell.prototype.select.apply(this);
+        var output = this.element.find("div.text_cell_render");
+        output.trigger('focus');
+    };
 
 
-TextCell.prototype.edit = function () {
-    if (this.rendered === true) {
-        var text_cell = this.element;
-        var input = text_cell.find("textarea.text_cell_input");
-        var output = text_cell.find("div.text_cell_render");  
-        output.hide();
-        input.show().trigger('focus');
-        this.rendered = false;
+    TextCell.prototype.edit = function () {
+        if (this.rendered === true) {
+            var text_cell = this.element;
+            var input = text_cell.find("textarea.text_cell_input");
+            var output = text_cell.find("div.text_cell_render");  
+            output.hide();
+            input.show().trigger('focus');
+            this.rendered = false;
+        };
     };
-};
 
 
-TextCell.prototype.render = function () {
-    if (this.rendered === false) {
-        var text_cell = this.element;
-        var input = text_cell.find("textarea.text_cell_input");
-        var output = text_cell.find("div.text_cell_render");    
-        var text = input.val();
-        if (text === "") {
-            text = this.placeholder;
-            input.val(text);
+    TextCell.prototype.render = function () {
+        if (this.rendered === false) {
+            var text_cell = this.element;
+            var input = text_cell.find("textarea.text_cell_input");
+            var output = text_cell.find("div.text_cell_render");    
+            var text = input.val();
+            if (text === "") {
+                text = this.placeholder;
+                input.val(text);
+            };
+            output.html(text)
+            input.html(text);
+            MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
+            input.hide();
+            output.show();
+            this.rendered = true;
         };
-        output.html(text)
-        input.html(text);
-        MathJax.Hub.Queue(["Typeset",MathJax.Hub]);
-        input.hide();
-        output.show();
-        this.rendered = true;
     };
-};
 
 
-TextCell.prototype.config_mathjax = function () {
-    var text_cell = this.element;
-    var that = this;
-    text_cell.click(function () {
-        that.edit();
-    }).focusout(function () {
-        that.render();
-    });
-    
-    text_cell.trigger("focusout");
-};
+    TextCell.prototype.config_mathjax = function () {
+        var text_cell = this.element;
+        var that = this;
+        text_cell.click(function () {
+            that.edit();
+        }).focusout(function () {
+            that.render();
+        });
+        
+        text_cell.trigger("focusout");
+    };
 
 
-TextCell.prototype.get_text = function() {
-    return this.element.find("textarea.text_cell_input").val();
-};
+    TextCell.prototype.get_text = function() {
+        return this.element.find("textarea.text_cell_input").val();
+    };
 
 
-TextCell.prototype.set_text = function(text) {
-    this.element.find("textarea.text_cell_input").val(text);
-    this.element.find("textarea.text_cell_input").html(text);
-    this.element.find("div.text_cell_render").html(text);
-};
+    TextCell.prototype.set_text = function(text) {
+        this.element.find("textarea.text_cell_input").val(text);
+        this.element.find("textarea.text_cell_input").html(text);
+        this.element.find("div.text_cell_render").html(text);
+    };
 
 
-TextCell.prototype.at_top = function () {
-    if (this.rendered) {
-        return true;
-    } else {
-        return false;
-    }
-};
+    TextCell.prototype.at_top = function () {
+        if (this.rendered) {
+            return true;
+        } else {
+            return false;
+        }
+    };
+
+
+    TextCell.prototype.at_bottom = function () {
+        if (this.rendered) {
+            return true;
+        } else {
+            return false;
+        }
+    };
 
 
-TextCell.prototype.at_bottom = function () {
-    if (this.rendered) {
-        return true;
-    } else {
-        return false;
+    TextCell.prototype.fromJSON = function (data) {
+        if (data.cell_type === 'text') {
+            this.set_text(data.text);
+            this.grow(this.element.find("textarea.text_cell_input"));
+        };
     }
-};
 
 
-TextCell.prototype.fromJSON = function (data) {
-    if (data.cell_type === 'text') {
-        this.set_text(data.text);
-        this.grow(this.element.find("textarea.text_cell_input"));
+    TextCell.prototype.toJSON = function () {
+        return {
+            cell_type : 'text',
+            text : this.get_text(),
+        };
     };
-}
 
+    IPython.TextCell = TextCell;
 
-TextCell.prototype.toJSON = function () {
-    return {
-        cell_type : 'text',
-        text : this.get_text(),
-    };
-};
+    return IPython;
 
+}(IPython));
 
diff --git a/IPython/frontend/html/notebook/static/js/utils.js b/IPython/frontend/html/notebook/static/js/utils.js
index 8aaf55a..4cb8266 100644
--- a/IPython/frontend/html/notebook/static/js/utils.js
+++ b/IPython/frontend/html/notebook/static/js/utils.js
@@ -3,60 +3,70 @@
 // Utilities
 //============================================================================
 
+IPython.namespace('IPython.utils')
 
-var uuid = function () {
-    // http://www.ietf.org/rfc/rfc4122.txt
-    var s = [];
-    var hexDigits = "0123456789ABCDEF";
-    for (var i = 0; i < 32; i++) {
-        s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
+IPython.utils = (function (IPython) {
+
+    var uuid = function () {
+        // http://www.ietf.org/rfc/rfc4122.txt
+        var s = [];
+        var hexDigits = "0123456789ABCDEF";
+        for (var i = 0; i < 32; i++) {
+            s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
+        }
+        s[12] = "4";  // bits 12-15 of the time_hi_and_version field to 0010
+        s[16] = hexDigits.substr((s[16] & 0x3) | 0x8, 1);  // bits 6-7 of the clock_seq_hi_and_reserved to 01
+
+        var uuid = s.join("");
+        return uuid;
+    };
+
+
+    //Fix raw text to parse correctly in crazy XML
+    function xmlencode(string) {
+        return string.replace(/\&/g,'&'+'amp;')
+            .replace(/</g,'&'+'lt;')
+            .replace(/>/g,'&'+'gt;')
+            .replace(/\'/g,'&'+'apos;')
+            .replace(/\"/g,'&'+'quot;')
+            .replace(/`/g,'&'+'#96;')
     }
-    s[12] = "4";  // bits 12-15 of the time_hi_and_version field to 0010
-    s[16] = hexDigits.substr((s[16] & 0x3) | 0x8, 1);  // bits 6-7 of the clock_seq_hi_and_reserved to 01
-
-    var uuid = s.join("");
-    return uuid;
-};
-
-
-//Fix raw text to parse correctly in crazy XML
-function xmlencode(string) {
-    return string.replace(/\&/g,'&'+'amp;')
-        .replace(/</g,'&'+'lt;')
-        .replace(/>/g,'&'+'gt;')
-        .replace(/\'/g,'&'+'apos;')
-        .replace(/\"/g,'&'+'quot;')
-        .replace(/`/g,'&'+'#96;')
-}
-
-//Map from terminal commands to CSS classes
-attrib = {
-    "30":"cblack", "31":"cred",
-    "32":"cgreen", "33":"cyellow",  
-    "34":"cblue", "36":"ccyan", 
-    "37":"cwhite", "01":"cbold"}
-
-//Fixes escaped console commands, IE colors. Turns them into HTML
-function fixConsole(txt) {
-    txt = xmlencode(txt)
-    var re = /\033\[([\d;]*?)m/
-    var opened = false
-    var cmds = []
-    var opener = ""
-    var closer = ""
-    
-    while (re.test(txt)) {
-        var cmds = txt.match(re)[1].split(";")
-        closer = opened?"</span>":""
-        opened = cmds.length > 1 || cmds[0] != 0
-        var rep = []
-        for (var i in cmds)
-            if (typeof(attrib[cmds[i]]) != "undefined")
-                rep.push(attrib[cmds[i]])
-        opener = rep.length > 0?"<span class=\""+rep.join(" ")+"\">":""
-        txt = txt.replace(re, closer + opener)
+
+    //Map from terminal commands to CSS classes
+    attrib = {
+        "30":"cblack", "31":"cred",
+        "32":"cgreen", "33":"cyellow",  
+        "34":"cblue", "36":"ccyan", 
+        "37":"cwhite", "01":"cbold"}
+
+    //Fixes escaped console commands, IE colors. Turns them into HTML
+    function fixConsole(txt) {
+        txt = xmlencode(txt)
+        var re = /\033\[([\d;]*?)m/
+        var opened = false
+        var cmds = []
+        var opener = ""
+        var closer = ""
+        
+        while (re.test(txt)) {
+            var cmds = txt.match(re)[1].split(";")
+            closer = opened?"</span>":""
+            opened = cmds.length > 1 || cmds[0] != 0
+            var rep = []
+            for (var i in cmds)
+                if (typeof(attrib[cmds[i]]) != "undefined")
+                    rep.push(attrib[cmds[i]])
+            opener = rep.length > 0?"<span class=\""+rep.join(" ")+"\">":""
+            txt = txt.replace(re, closer + opener)
+        }
+        if (opened) txt += "</span>"
+        return txt.trim()
+    }
+
+    return {
+        uuid : uuid,
+        fixConsole : fixConsole
     }
-    if (opened) txt += "</span>"
-    return txt.trim()
-}
+
+}(IPython));