function openCalendar (url,formfeld) {
		var fensterwerte = '';
			fensterwerte += 'toolbar=no,';
			fensterwerte += 'menubar=no,';
			fensterwerte += 'status=no,';
			fensterwerte += 'scrollbars=yes,';
			fensterwerte += 'scrollbars=0,',
			fensterwerte += 'resizable=no,';
			fensterwerte += 'dependent=yes';
		var moveleft = ((screen.width)/2-200);
		var movetop = ((screen.height)/2-100);
		var breitelinks = 220;
		var hoehelinks = 200;
			mywin=window.open(url,"popupKalender","width="+breitelinks+",height="+hoehelinks+",fensterwerte");
			mywin.document.close();
			mywin.moveTo(moveleft,movetop);
			mywin.focus();
        window.setTimeout("mywin.startKalender('"+formfeld+"')",1000);
        	//	mywin.startKalender(formfeld);
	}