// JavaScript Document
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;
}