diff --git a/IPython/frontend/html/notebook/static/css/notebook.css b/IPython/frontend/html/notebook/static/css/notebook.css
index 4dd1761..1af0df1 100644
--- a/IPython/frontend/html/notebook/static/css/notebook.css
+++ b/IPython/frontend/html/notebook/static/css/notebook.css
@@ -342,4 +342,4 @@ div.text_cell_render {
 }
 
 .shortcut_descr {
-}
\ No newline at end of file
+}
diff --git a/IPython/frontend/html/notebook/static/js/codecell.js b/IPython/frontend/html/notebook/static/js/codecell.js
index 279bad6..83ebd37 100644
--- a/IPython/frontend/html/notebook/static/js/codecell.js
+++ b/IPython/frontend/html/notebook/static/js/codecell.js
@@ -88,11 +88,11 @@ var IPython = (function (IPython) {
                 return false;
             };
         } else if (event.keyCode === 76 && event.ctrlKey && event.shiftKey
-		   && event.type == 'keydown') {
+                   && event.type == 'keydown') {
             // toggle line numbers with Ctrl-Shift-L
-	    this.toggle_line_numbers()
+            this.toggle_line_numbers();
         }
-	else {
+        else {
             // keypress/keyup also trigger on TAB press, and we don't want to
             // use those to disable tab completion.
             if (this.is_completing && event.keyCode !== 9) {
@@ -184,12 +184,12 @@ var IPython = (function (IPython) {
     };
 
     CodeCell.prototype.toggle_line_numbers = function () {
-	if (this.code_mirror.getOption('lineNumbers') == false) {
-	    this.code_mirror.setOption('lineNumbers', true);
-	} else {
-	    this.code_mirror.setOption('lineNumbers', false);
-	}
-	this.code_mirror.refresh()
+        if (this.code_mirror.getOption('lineNumbers') == false) {
+            this.code_mirror.setOption('lineNumbers', true);
+        } else {
+            this.code_mirror.setOption('lineNumbers', false);
+        }
+        this.code_mirror.refresh()
     };
 
     CodeCell.prototype.select = function () {
diff --git a/IPython/frontend/html/notebook/static/js/header.js b/IPython/frontend/html/notebook/static/js/header.js
index 0f80ea9..a808af8 100644
--- a/IPython/frontend/html/notebook/static/js/header.js
+++ b/IPython/frontend/html/notebook/static/js/header.js
@@ -16,14 +16,14 @@ var IPython = (function (IPython) {
         if (this.selector !== undefined) {
             this.element = $(selector);
             this.content = this.element.find('div.header');
-	    this.style();
+            this.style();
             this.bind_events();
         }
     };
 
     HeaderSection.prototype.style = function () {
-	this.content.addClass('ui-helper-clearfix');
-	this.content.find('#quick_help').button();
+        this.content.addClass('ui-helper-clearfix');
+        this.content.find('#quick_help').button();
     };
 
     HeaderSection.prototype.bind_events = function () {
diff --git a/IPython/frontend/html/notebook/static/js/notebook.js b/IPython/frontend/html/notebook/static/js/notebook.js
index 7af23d3..d45bc17 100644
--- a/IPython/frontend/html/notebook/static/js/notebook.js
+++ b/IPython/frontend/html/notebook/static/js/notebook.js
@@ -147,7 +147,7 @@ var IPython = (function (IPython) {
                 return false;
             } else if (event.which === 190 && that.control_key_active) {
                 // Restart kernel = .  # matches qt console
-		IPython.notebook.restart_kernel();
+                IPython.notebook.restart_kernel();
                 that.control_key_active = false;
                 return false;
             } else if (that.control_key_active) {
@@ -213,8 +213,8 @@ var IPython = (function (IPython) {
             {key: 'Ctrl-m m', help: 'markdown cell'},
             {key: 'Ctrl-m p', help: 'select previous'},
             {key: 'Ctrl-m n', help: 'select next'},
-	    {key: 'Ctrl-m i', help: 'interrupt kernel'},
-	    {key: 'Ctrl-m .', help: 'restart kernel'},
+            {key: 'Ctrl-m i', help: 'interrupt kernel'},
+            {key: 'Ctrl-m .', help: 'restart kernel'},
             {key: 'Ctrl-m h', help: 'show keyboard shortcuts'}
         ];
         for (var i=0; i<shortcuts.length; i++) {
@@ -623,7 +623,7 @@ var IPython = (function (IPython) {
     // Other cell functions: line numbers, ...
 
     Notebook.prototype.cell_toggle_line_numbers = function() {
-	this.selected_cell().toggle_line_numbers()
+        this.selected_cell().toggle_line_numbers()
     };
 
     // Kernel related things
@@ -636,7 +636,7 @@ var IPython = (function (IPython) {
 
 
     Notebook.prototype.restart_kernel = function () {
-	var that = this;
+        var that = this;
         var notebook_id = IPython.save_widget.get_notebook_id();
 
         var dialog = $('<div/>');
@@ -648,7 +648,7 @@ var IPython = (function (IPython) {
             title: "Restart kernel or continue running?",
             buttons : {
                 "Restart": function () {
-		    that.kernel.restart($.proxy(that.kernel_started, that));
+                    that.kernel.restart($.proxy(that.kernel_started, that));
                     $(this).dialog('close');
                 },
                 "Continue running": function () {
diff --git a/IPython/frontend/html/notebook/templates/notebook.html b/IPython/frontend/html/notebook/templates/notebook.html
index 1e79cc1..ffb32c6 100644
--- a/IPython/frontend/html/notebook/templates/notebook.html
+++ b/IPython/frontend/html/notebook/templates/notebook.html
@@ -65,7 +65,7 @@
 <div id="MathJaxFetchingWarning"
       style="width:80%; margin:auto;padding-top:20%;text-align: justify; display:none">
       <p style="font-size:26px;">There was an issue trying to fetch MathJax.js
-	from the internet.</p>
+        from the internet.</p>
 
       <p style="padding:0.2em"> With a working internet connection, you can run
     the following at a Python or IPython prompt, which will install a local
@@ -278,5 +278,3 @@
 </body>
 
 </html>
-
-