window.onresize = sizeContent;

function sizeContent() {
	var viewportheight;
	var size;
	
	if (typeof window.innerWidth != 'undefined') {
		viewportheight = window.innerHeight
	}
	
	else if (typeof document.documentElement != 'undefined' && typeof document.documentElement.clientWidth != 'undefined' && document.documentElement.clientWidth != 0) {
		viewportheight = document.documentElement.clientHeight
	}
	else {
		viewportheight = document.getElementsByTagName('body')[0].clientHeight
	}
}