var screenh;
var screenw; 
function popup_amtsblatt(pfad) 
  {screenh = screen.height;
  screenw = screen.width;
 window.open("http://www.stadt-harburg-schwaben.de/amtsblatt/2010/KW30.pdf","","target=_blank,toolbar=yes,resizable=yes,scrollbars=yes,left=0,top=0,width="+screenw+",height="+screenh);}