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 addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	}
	else {
		window.onload = function() {
			if (oldonload) {
				oldonload();
			}
			func();
		}
	}
}

startList = function() {
	if (document.all&&document.getElementById) {
		target = document.getElementById("masthead_sub");
		target.onmouseover=function() {
			this.className+=" over";
		}
		target.onmouseout=function() {
			this.className=this.className.replace(" over", "");
		}
	}
}

function setContent() {
	if (document.getElementById) {
		var windowHeight = getWindowHeight();
		if (windowHeight > 0) {
			var contentElement = document.getElementById('content');
			var contentHeight = contentElement.offsetHeight;
			if (windowHeight - contentHeight > 0) {
				contentElement.style.position = 'relative';
				contentElement.style.top = ((windowHeight / 2) - (contentHeight / 2)) + 'px';
			}
			else {
				contentElement.style.position = 'static';
			}
		}
	}
}
window.onload = function() {
	setContent();
}
window.onresize = function() {
	setContent();
}

addLoadEvent(startList);
addLoadEvent(setContent);