function popup(url,w,h,scrolling){
		var name="window";
		var win=null;
		LeftPosition=(screen.width)?(screen.width-w)/2:10;
		TopPosition=(screen.height)?(screen.height-h)/2:10;
		ns4=(document.layers)? true:false;
		options='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scrolling+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable='+scrolling;
		
		if (ns4){
			options='width='+w+',height='+h+',screenY='+TopPosition+',screenX='+LeftPosition+',scrollbars='+scrolling+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable='+scrolling;
		}
		win=window.open(url,name,options);
		win.focus();
}
			
function startup(url){
	links=740;
	oben=160;
	f1 = window.open(url,"fenster","toolbar=no,scrollbars=no,status=no,resizable=no,width=500,height=240,top="+ oben+",screenY="+oben+",left="+ links+",screenX="+links);
}