function popup_startbild(url, wid, hei)
{
  if(hei == '738')
  {
 startbild_window=window.open("../startbild.php?url="+url+"&wid="+wid+"&hei="+hei, "Lehrsaal", "dependent=yes,height=738,width=500,left=300,top=50,location=no,menubar=no,resizable=no,status=no,toolbar=no,alwaysRaised=yes");
		startbild_window.focus;
  }
  if(hei == '374')
  {
	 startbild_window=window.open("../startbild.php?url="+url+"&wid="+wid+"&hei="+hei, "Lehrsaal", "dependent=yes,height=374,width=500,left=300,top=50,location=no,menubar=no,resizable=no,status=no,toolbar=no,alwaysRaised=yes");
		startbild_window.focus;  
  }
  if(hei == '544')
  {
	 startbild_window=window.open("../startbild.php?url="+url+"&wid="+wid+"&hei="+hei, "Lehrsaal", "dependent=yes,height=544,width=600,left=300,top=50,location=no,menubar=no,resizable=no,status=no,toolbar=no,alwaysRaised=yes");
		startbild_window.focus;  
  }

}