/* Philly Creative Guide Javascript Document - Banner Footer Positioning */

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 setFooter() {
	if(document.getElementById) {
		var windowHeight = getWindowHeight();
		if(windowHeight > 0) {
			var contentHeight = document.getElementById('container').offsetHeight;
			var footerElement = document.getElementById('bannerFooter');
			var footerHeight  = footerElement.offsetHeight;
			
			if (windowHeight - (contentHeight + footerHeight) >= 0) {
				footerElement.style.position = 'relative';
				footerElement.style.top = (windowHeight - (contentHeight + footerHeight)) + 'px';
			} else {
				footerElement.style.position = 'static';
			};
		};
	};
};

window.onload = function() {
	setFooter();
};

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