function openWindow(url,name,weite,hoehe,scrollbars) {
	lmitte=Math.round((screen.width/2)-(weite/2));
	omitte=Math.round((screen.height/2)-(hoehe/2));
	window.open(url,name,"width="+weite+",height="+hoehe+",left="+lmitte+",top="+omitte+",status=no,resizable=no,alwaysRaised=yes,dependent=yes,scrollbars="+scrollbars);
	return true;
}