Deleting CSS Rule does not work in Firefox
<p>I am trying to delete the first css rule. </p>

<p>However, this does not work in Firefox 3.6.28. Is this the same for everyone and why is this the case?</p>

<pre><code>&lt;!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"&gt;
&lt;html&gt;
    &lt;head&gt;
        &lt;title&gt;Test&lt;/title&gt;
        &lt;meta http-equiv="Content-Type" content="text/html;charset=utf-8" &gt;
        &lt;script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"&gt;&lt;/script&gt;
        &lt;script type="text/javascript"&gt;

            $(window).load(function(){

                console.log(document.styleSheets);
                document.styleSheets[0].deleteRule(0);
                console.log(document.styleSheets); // same as the first console.log

            });

        &lt;/script&gt;
        &lt;style&gt;
            body{font-size:62.5%;}
            #mc{padding:310px 0 10px 162px; color:#fff;}
            #content{width:500px;}
            #header{padding-top:10px;}
            #banner{padding:10px 0}
        &lt;/style&gt;
    &lt;/head&gt;
    &lt;body&gt;
        Test JS
    &lt;/body&gt;
&lt;/html&gt;
</code></pre>

<h2>Update</h2>

<p>Just to clarify, the delete seems to be working however the <code>console.log</code> shows the same number of rules before and after the delete.</p>
