function autofitIframe(id) 
     { 
          if (!window.opera && !document.mimeType && document.all && document.getElementById) 
          {         window.top.document.getElementById(id).style.height=document.getElementById("contentContainer").offsetHeight+"px"; 
          } 
          else if(document.getElementById) 
          { 
window.top.document.getElementById(id).style.height=document.getElementById("contentContainer").scrollHeight+"px" 
          } 
     } 

//<script language="JavaScript">
//function iFrameHeight() {
//if(document.getElementById && !(document.all)) {
//h = document.getElementById('iframename').contentDocument.body.scrollHeight;
//document.getElementById('iframename').style.height = h;
//}
//else if(document.all) {
//h = document.frames('iframename').document.body.scrollHeight;
//document.all.iframename.style.height = h;
//}
//}
//</script>