function iFrameHeight() {
	var getFFVersion=navigator.userAgent.substring(navigator.userAgent.indexOf("Firefox")).split("/")[1];
	var FFextraHeight=parseFloat(getFFVersion)>=0.1? 16 : 0; //extra height in px to add to iframe in FireFox 1.0+ browsers
	var currentfr=document.getElementById('IFEsprinet');

	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 {
			document.getElementById('IFEsprinet').height = 0;
			h = document.getElementById('IFEsprinet').document.body.scrollHeight;
			document.getElementById('IFEsprinet').height = h+'px';
		}
	}
}