function ResizeDivs() {
	
	var divHeightHeader = 140;
	var divHeightNavbar = 30;
	var divHeightContentMargin = 2 * 30;

	var divHeightContentLeft = document.getElementById('contentLeft').offsetHeight;
	var divHeightContentCenter = document.getElementById('contentCenter').offsetHeight;

	if (divHeightContentLeft > divHeightContentCenter ) {
		var divhoehe = divHeightContentLeft;
	} else {
		var divhoehe = divHeightContentCenter ;
	}
	
	document.getElementById('content').style.height = divhoehe + divHeightContentMargin + 'px';
	document.getElementById('contentLeft').style.height = divhoehe+'px';
	document.getElementById('contentCenter').style.height = divhoehe+'px';
	document.getElementById('master').style.height = divhoehe + divHeightHeader + divHeightNavbar + divHeightContentMargin  + 'px';
}