function PlayerPopUp(page) {  
  var top=(screen.height-480)/2;
  var left=(screen.width-640)/2;   	
  
  var player = window.open(page, "player", "directories=no,location=no,status=no,scrollbars=no,menubar=no,toolbar=no,resizable=no,top="+top+",left="+left+",width=640,height=480");
}