var WinNum=0;
function popup(Url,x,y) {
  var String;
  String =  "toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=0,copyhistory=0,";
  String += ",width=";
  String += x;
  String += ",height=";
  String += y;

  WinPic=window.open(Url,WinNum++,String);
}