<script type="text/javascript">
var iframeids=["myframe"]
var iframehide="yes"

var getFFVersion=navigator.userAgent.substring(navigator.userAgent.indexOf("Firefox")).split("/")[1]
var FFextraHeight=getFFVersion>=0.1? 16 : 20 //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[i])
    if ((document.all || document.getElementById) && iframehide=="no"){
    var tempobj=document.all? document.all[iframeids[i]] : document.getElementById(iframeids[i])
        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
</script>

----------------------------------------------
iframe 삽입 요령

<iframe id="myframe" src="http://www.icq4ever.webzero.co.kr/" width="100%" frameborder="0"scrolling="no"></iframe>

iframe id는 자바스크립트에서 사용되며 반드시 이 둘은 일치해야한다.
src는 삽입할 웹페이지.