var iframeids=["MainFrame"]
var iframehide="no"
var getFFVersion=navigator.userAgent.substring(navigator.userAgent.indexOf("Firefox")).split("/")[1]
var FFextraHeight=parseFloat(getFFVersion)>=0.1? 3 : 0 

function resizeCaller() {
  var dyniframe=new Array()
  for (i=0; i<iframeids.length + 50; i++){
    if (document.getElementById)
      resizeIframe(iframeids)
      //reveal iframe for lower end browsers? (see var above):
      if ((document.all || document.getElementById) && iframehide=="no"){
        var tempobj=document.all? document.all[iframeids] : document.getElementById(iframeids)
        tempobj.style.display="block"
    }
  }
}

function resizeIframe(frameid){
  var currentfr=document.getElementById(frameid)
  if (currentfr && !window.opera){
    currentfr.style.display="block"
    if (currentfr.contentDocument && currentfr.contentDocument.body.offsetHeight) //ns6 syntax
      currentfr.height = currentfr.contentDocument.body.offsetHeight+FFextraHeight + 50; 
      else if (currentfr.Document && currentfr.Document.body.scrollHeight) //ie5+ syntax
      currentfr.height = currentfr.Document.body.scrollHeight+ 50;
      if (currentfr.addEventListener)
      currentfr.addEventListener("load", readjustIframe, false)
      else if (currentfr.attachEvent){
      currentfr.detachEvent("onload", readjustIframe) // Bug fix line
      currentfr.attachEvent("onload", readjustIframe)
    }
  }
}

function readjustIframe(loadevt) {
  var crossevt=(window.event)? event : loadevt
  var iframeroot=(crossevt.currentTarget)? crossevt.currentTarget : crossevt.srcElement
  if (iframeroot)
    resizeIframe(iframeroot.id);
}

if (window.addEventListener)
  window.addEventListener("load", resizeCaller, false)
else if (window.attachEvent)
  window.attachEvent("onload", resizeCaller)
else
  window.onload=resizeCaller