diff --git a/IPython/frontend/html/notebook/static/css/notebook.css b/IPython/frontend/html/notebook/static/css/notebook.css
index 3202f37..684735d 100644
--- a/IPython/frontend/html/notebook/static/css/notebook.css
+++ b/IPython/frontend/html/notebook/static/css/notebook.css
@@ -242,9 +242,16 @@ div.text_cell_render {
color: black;
}
-.CodeMirror span {
- vertical-align: bottom;
-}
+/* The following gets added to the if it is detected that the user has a
+ * monospace font with inconsistent normal/bold/italic height. See
+ * notebookmain.js. Such fonts will have keywords vertically offset with
+ * respect to the rest of the text. The user should select a better font.
+ * See: https://github.com/ipython/ipython/issues/1503
+ *
+ * .CodeMirror span {
+ * vertical-align: bottom;
+ * }
+ */
.CodeMirror {
line-height: 1.231; /* Changed from 1em to our global default */
diff --git a/IPython/frontend/html/notebook/static/js/notebookmain.js b/IPython/frontend/html/notebook/static/js/notebookmain.js
index 69562d1..db2b61f 100644
--- a/IPython/frontend/html/notebook/static/js/notebookmain.js
+++ b/IPython/frontend/html/notebook/static/js/notebookmain.js
@@ -41,31 +41,8 @@ $(document).ready(function () {
var nh = $('#test1').innerHeight();
var bh = $('#test2').innerHeight();
var ih = $('#test3').innerHeight();
- var dialog = $('');
if(nh != bh || nh != ih) {
- dialog.html('We have detected that your browser is using a '+
- 'monospace font that has an '+
- 'inconsistent size between '+
- 'normal, '+
- 'bold, and '+
- 'italic '+
- 'variants, which are used by IPython for syntax highlighting. '+
- 'This will cause visual artifacts. (The font is probably "Courier New") '+
- 'We recommend that you configure your browser to use a different '+
- 'monospace font.
'+
- 'normal='+String(nh)+'px bold='+String(bh)+'px italic='+String(ih)+'px');
- $(document).append(dialog);
- dialog.dialog({
- resizable: false,
- modal: true,
- title: "Bad fonts detected",
- closeText: '',
- buttons : {
- "Ok": function () {
- $(this).dialog('close');
- }
- }
- });
+ $('head').append('');
$('#fonttest').remove();
}