Non-CDN hosted jQuery caused some strange behaviour
<p>I was using JQuery in this download link, and included it in the head tag of a HTML web page:</p>

<pre><code>&lt;script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"&gt;&lt;/script&gt;
</code></pre>

<p>In a php web page, I got these few lines of codes:</p>

<pre><code> $.ajax({
      url: 'http://mywebsite.com/site1/toavail/',
      type: "post",
      success: function(data) { 
      // some more code here
      }
   });
</code></pre>

<p>When I tested the HTML page in IE 6, and 7, I saw the same warning message:
"permission denied"
When I tested it in Firefox 3, nothing was returned from the server web page.</p>

<p>Later, I changed the JQuery source link to be:</p>

<pre><code>http://code.jquery.com/jquery-1.4.2.js
</code></pre>

<p>I refreshed the web page, and I could saw the returned value then.</p>
