title: PHP : session variable aren't usable when site is redirected
body: <p>I've to admin a small website for my alumni group which is hosted by my ISV. The url is something like www.myIsv.com/myWebSite/ which is quite ugly and very forgetable. The main admin of the webserver has registered a domain name www.mysmallwebsite.com and put a index.html with this content:</p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;
  &lt;title&gt;www.mysmallwebsite.com&lt;/title&gt;
  &lt;/head&gt;
  
  &lt;frameset&gt;
     &lt;frame src="http://www.myIsv.com/myWebSite/" name="redir"&gt;
        &lt;noframes&gt;
          &lt;p&gt;Original location:
            &lt;a href="www.myIsv.com/myWebSite/"&gt;http://www.myIsv.com/myWebSite/&lt;/a&gt;
          &lt;/p&gt;
        &lt;/noframes&gt;
   &lt;/frameset&gt;  
  &lt;/html&gt;
  </code></pre>
  
  <p>It works fine, but some features like PHP Session variables doesn't work anymore! Anyone has a suggestion for correcting that?</p>
  
  <p>Edit:
  This doesn't work both on IE and on Firefox (no plugins)</p>
  
  <p>Thanks</p>