'style' is null or not an object

Hej Eksperter,

Jeg får nedenstående fejl i IE:

'style' is null or not an object

Det drejer sig om dette javascript, der automatisk skal resize height på en iFrame. Kan i se hvad der forårsager det?



//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=["loginframe"]

//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