function popup(url, breite, hoehe, diffX, diffY) 
{
	links = (screen.width/2)-(breite/2);
	oben = (screen.height/2)-(hoehe/2);
	window.open(url,"name","height="+hoehe+",width="+breite+",status = no,toolbar = no,menubar = no, location = no,resizable = yes,titlebar = no,scrollbars = yes,fullscreen = no,top ="+oben+",left ="+links+"");
} 

function popupNoScroll(url, breite, hoehe, diffX, diffY) 
{
	links = (screen.width/2)-(breite/2);
	oben = (screen.height/2)-(hoehe/2);
	window.open(url,"name","height="+hoehe+",width="+breite+",status = no,toolbar = no,menubar = no, location = no,resizable = no,titlebar = no,scrollbars = no,fullscreen = no,top ="+oben+",left ="+links+"");
}