function popup($url,$einstellungen) {
	var xsize = screen.width
	var ysize = screen.height
	var breite=xsize
	var hoehe=ysize
	var xpos=(xsize-breite)/2
	var ypos=(ysize-hoehe)/2
	
	if ($url == 'weg') $url2='images/weg.jpg';
	NF=window.open($url2,"",$einstellungen+",top=100,left=100");
	NF.focus; 
}