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;
	} else {
		windowHeight = false;
	} 
return windowHeight; 
}
function getWindowWidth() { 
	var windowWidth = 0; 
	if (typeof(window.innerWidth) == 'number') { 
		windowWidth = window.innerWidth;
	} else if (document.documentElement && document.documentElement.clientWidth) { 
		windowWidth = document.documentElement.clientWidth; 
	} else if (document.body && document.body.clientWidth) { 
		windowWidth = document.body.clientWidth;
	} else {
		windowWidth = false;
	} 
return windowWidth; 
}