function winOpen(url, breite, hoehe) {
      links = (screen.width/2)-(breite/2);
      oben = (screen.height/2)-(hoehe/2);
      window.open(url,"popup","height="+hoehe+",width="+breite+",status = no,toolbar = no,menubar = no,location = no,resizable = no,titlebar = no,scrollbars = no,fullscreen = no,top ="+oben+",left ="+links);
   } 
function mouseoverall(id)
{
	document.getElementById(id).src="images/"+id+"_a.gif";
	//alert (eval(id+"_a.gif"));
}
function mouseoutall(id)
{
	document.getElementById(id).src="images/"+id+".gif";
}