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