if your useing iframe's this may be useful

[Mentor]

My site usese iframes, but when a serch engine index's it such as google, it also indexs many of the seprt pages. so people are ogten linking in to a page without having any form of navigtion. wich is why i made this simple javascrip. all it does is write a link back to the main site, when the page is not in a frame.
im posting it in case anyoen else finds it useful

<SCRIPT language="JavaScript"> 
<!--
   if (top.frames.length==0)
    {
     document.write('<br><strong><a href=" LINK URL">&lt; &lt; &lt;  Back to SITE NAME</a></strong><br><p>&nbsp;</p>');
     }
//--> 
</SCRIPT>