function popup(id) {

  if (id != "Mitmachen" && id != "Download") {
    var mwidth  = 457;
    var mheight = 323;
    var ext = ',scrollbars=yes';
  } else {
    var mwidth	= 750;
    var mheight	= 600;
    var ext = ',scrollbars=no';
  }
	

  var myx = (screen.width/2) - (mwidth/2);
  var myy = (screen.height/2) - (mheight/2);

 if (id == "Download") {
   mainWindow = window.open("http://www.slotgewinn.de/Download.php",'SlotGewinn','width='+mwidth+',height='+mheight+',top='+myy+',left='+myx+',status=no,toolbar=no,location=no'+ext)
  } else {
 mainWindow = window.open("http://www.qdatabase.net/slots/content.php?id="+id,'SlotGewinn','width='+mwidth+',height='+mheight+',top='+myy+',left='+myx+',status=no,toolbar=no,location=no'+ext)
     }
 
  mainWindow.focus();


}