function getWindowHeight() {
	var windowHeight=0;
	if (typeof(window.innerHeight)=='number') {
		windowHeight=window.innerHeight;
	}
	else {
		if (document.documentElement && document.documentElement.clientHeight) {
			windowHeight=document.documentElement.clientHeight;
		}
		else {
			if (document.body&&document.body.clientHeight) {
				windowHeight=document.body.clientHeight;
			}
		}
	}
	return windowHeight;
}

function setDIVHeight() {
	if (document.getElementById) {
		var windowHeight=getWindowHeight();
		if (windowHeight < 515) {
			var windowHeight=515;
		}
		var contElement=document.getElementById('issoFlex');
		contElement.style.height=windowHeight - 115 + "px";
	}
}

window.onresize = function(){
	setDIVHeight();
}