//Input the IDs of the IFRAMES you wish to dynamically resize to match its content height:
//Separate each ID with a comma. Examples: ["myframe1", "myframe2"] or ["myframe"] or [] for none:
var iframeids=[];

//Should script hide iframe from browsers that don't support this script (non IE5+/NS6+ browsers. Recommended):
var iframehide="no";

var getFFVersion=navigator.userAgent.substring(navigator.userAgent.indexOf("Firefox")).split("/")[1];
var FFextraHeight=parseFloat(getFFVersion)>=0.1? 3 : 0; //extra height in px to add to iframe in FireFox 1.0+ browsers

function resizeCaller() {
    var dyniframe=new Array()
    for (i=0; i<iframeids.length; 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; 
        else if (currentfr.Document && currentfr.Document.body.scrollHeight) //ie5+ syntax
            currentfr.height = currentfr.Document.body.scrollHeight;
        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);
}

function loadintoIframe(iframeid, url){
    if (document.getElementById)
        document.getElementById(iframeid).src=url;
}

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