var getFFVersion = navigator.userAgent.substring(navigator.userAgent.indexOf("Firefox")).split("/")[1]
//extra height in px to add to iframe in FireFox 1.0+ browsers
var FFextraHeight = getFFVersion >= 0.1 ? 16 : 0

function dyniframesize(iframename) {
    var pTar = null;
    if (document.getElementById) {
        pTar = document.getElementById(iframename);
    }
    else {
        eval('pTar = ' + iframename + ';');
    }

    if (pTar && !window.opera) {
        //begin resizing iframe
        //pTar.style.display="block"

        if (pTar.contentDocument && pTar.contentDocument.body.offsetHeight) {   //ns6 syntax
            pTar.height = pTar.contentDocument.body.offsetHeight + FFextraHeight;
        }
        else if (pTar.Document && pTar.Document.body.scrollHeight) {    //ie5+ syntax
            pTar.height = pTar.Document.body.scrollHeight + 60;
        }
    }
}