function center(object)
{
	object.style.marginLeft = "-" + parseInt(object.offsetWidth / 2) + "px";
	//object.style.marginTop = "-" + parseInt(object.offsetHeight / 2) + "px";
}

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 setContent() {
	if (document.getElementById) {
		var windowheight = getWindowheight();
		if (windowheight > 0) {
			var contentElement = document.getElementById('window');
			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();} ;

function setGround() {
	if (document.getElementById) {
		var groundheight = getWindowheight();
		if (groundheight > 0) {
			var groundElement = document.getElementById('baggrund');
			groundElement.style.height = groundheight + 'px';
		}
	}
}
window.onload = function() { setGround(); }