function sameheight(addHeight)
{
	var theLeftHeight = document.getElementById('left-teaser').style.height ? document.getElementById('left-teaser').style.height.replace('px','') : document.getElementById('left-teaser').offsetHeight;
	var theContentHeight = document.getElementById('center').style.height ? document.getElementById('center').style.height.replace('px','') : document.getElementById('center').offsetHeight;
	var theRightHeight = document.getElementById('navigation').style.height ? document.getElementById('navigation').style.height.replace('px','') : document.getElementById('navigation').offsetHeight;


	var maxheight = Math.max(theLeftHeight,theContentHeight,theRightHeight);
	document.getElementById('left-teaser').style.height = (maxheight + addHeight) + 'px';

		document.getElementById('center').style.minHeight = (maxheight + addHeight) + 'px';
	document.getElementById('navigation').style.height = (maxheight + addHeight) + 'px';
	
}


if(document.all)
{
	window.attachEvent('onload',function() {sameheight(0)});	
}
else
{
	window.addEventListener('load',function() {sameheight(0)},false);	
}