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;
			var contentElement;

			var footerElement = document.getElementById('footer');
			var footerHeight  = footerElement.offsetHeight;

			var headerElement = document.getElementById('header');
			var headerHeight  = headerElement.offsetHeight;

			if (document.getElementById('searchpage'))
			{
				contentElement = document.getElementById('searchpage');
			}
			else if (document.getElementById('html'))
			{
				contentElement = document.getElementById('html');
			}
			else if (document.getElementById('right'))
			{
				contentElement = document.getElementById('right');
			}
			else if (document.getElementById('board'))
			{
				contentElement = document.getElementById('board');
			}
			else if (document.getElementById('right'))
			{
				contentElement = document.getElementById('right');
			}
			else if (document.getElementById('sitemap'))
			{
				contentElement = document.getElementById('sitemap');
			}
			else if (document.getElementById('step1'))
			{
				contentElement = document.getElementById('step1');
			}
			else if (document.getElementById('step2'))
			{
				contentElement = document.getElementById('step2');
			}
			else if (document.getElementById('step3'))
			{
				contentElement = document.getElementById('step3');
			}
			else if (document.getElementById('register'))
			{
				contentElement = document.getElementById('register');
			}
			else if (document.getElementById('view'))
			{
				contentElement = document.getElementById('view');
			}
			else if (document.getElementById('list'))
			{
				contentElement = document.getElementById('list');
			}
			else if (document.getElementById('faqlist'))
			{
				contentElement = document.getElementById('faqlist');
			}
			else if (document.getElementById('content'))
			{
				contentElement = document.getElementById('content');
			}
			else if (document.getElementById('contents'))
			{
				contentElement = document.getElementById('contents');
			}
			contentHeight  = contentElement.offsetHeight;
			contentElement.style.height = (windowHeight - (headerHeight + footerHeight + 25)) + 'px';

			/*if (windowHeight - (pageHeight + footerHeight) >= 0) {
				footerElement.style.top = (windowHeight - (pageHeight + footerHeight)) + 'px';
				
			}
			else {
				footerElement.style.top = '0px';
			}*/
		}
	}
}


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