TinyMCE : Toolbar icons not appearing

I was exploring tiny mce editor for one of my project and what I found out was the Icons in the tool bar are not appearing. It is showing some unicode which the browser is unable to display. Here is the html code for the page:

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/ht/loose.dtd">
<html>
<head>
<title>HTML</title>
<script type="text/javascript" src="../js/tinymce/tinymce.min.js"></script>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<script type="text/javascript">
tinymce.init({
        selector: "textarea",
        plugins: [
                "advlist autolink autosave link image lists charmap print preview hr anchor pagebreak spellchecker",
                "searchreplace wordcount visualblocks visualchars code fullscreen insertdatetime media nonbreaking",
                "table contextmenu directionality emoticons template textcolor paste fullpage textcolor"
        ],

        toolbar1: "newdocument fullpage | bold italic underline strikethrough | alignleft aligncenter alignright alignjustify | styleselect formatselect fontselect fontsizeselect",
        toolbar2: "cut copy paste | searchreplace | bullist numlist | outdent indent blockquote | undo redo | link unlink anchor image media code | inserttime preview | forecolor backcolor",
        toolbar3: "table | hr removeformat | subscript superscript | charmap emoticons | print fullscreen | ltr rtl | spellchecker | visualchars visualblocks nonbreaking template pagebreak restoredraft",

        menubar: false,
        toolbar_items_size: 'small',

        style_formats: [
                {title: 'Bold text', inline: 'b'},
                {title: 'Red text', inline: 'span', styles: {color: '#ff0000'}},
                {title: 'Red header', block: 'h1', styles: {color: '#ff0000'}},
                {title: 'Example 1', inline: 'span', classes: 'example1'},
                {title: 'Example 2', inline: 'span', classes: 'example2'},
                {title: 'Table styles'},
                {title: 'Table row 1', selector: 'tr', classes: 'tablerow1'}
        ],

        templates: [
                {title: 'Test template 1', content: 'Test 1'},
                {title: 'Test template 2', content: 'Test 2'}
        ]
});</script>
</head>
<body>
<form method="post" action="somepage">
    <textarea name="content" style="width:100%"></textarea>
</form>
</body>
</html>

On the other hand if I replace the script with

<script type="text/javascript" src="http://tinymce.cachefly.net/4.0/tinymce.min.js"></script>

I am able to see all icons perfectly. I have added all the contents of js in the tinymce download into my web project in the js folder. Does anyone have a clue about this issue?

Answer

Okay I got this one working.

After carefully analyzing the console error, I found out that it was an issue of tinymce font which was not getting downloaded.

It was basically the issue of Mozilla Firefox’s security.fileuri.strict_origin_policy property which needed to be changed to false to relax the origin restriction. Now I am able to see those icons perfectly.

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Answer