function ResizeDivs() {
	var divhoehe1 = document.getElementById('contentbox').offsetHeight + 22;
	var divhoehe2 = document.getElementById('nav2bar').offsetHeight;

	if (divhoehe1 >= divhoehe2) {
		var divhoehe = divhoehe1 + 30;
	} else {
		var divhoehe = divhoehe2 + 30;
	}

	document.getElementById('content').style.height=divhoehe+'px';
	document.getElementById('center').style.height=divhoehe+'px';
	document.getElementById('vertspace').style.height=divhoehe+'px';
	document.getElementById('nav2bar').style.height=divhoehe+'px';
}