function openImpressum(url) {
    windowFeatures = 'width=1024,height=768,toolbar=0,location=0,directories=0,status=0,menuBar=1,scrollBars=0,resizable=1';
	newWindow = window.open( url, 'tdaimpressum', windowFeatures );	newWindow.resizeTo(1024, 768); newWindow.moveTo(0,0); newWindow.focus();
	return false;
	}