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

	//document.documentMode for IE8
	if (pTar && !window.opera && !document.documentMode) {   


		//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;   
		}   
	}   
}