function popup(page,name,w,h)
{
  var posL = 0;
  var posT = 0;

  if((posL + w) >= screen.width) w = (screen.width - 50);
  if((posT + h) >= screen.height) h = (screen.height - 75);

  var settings = "width=" + w + ",height=" + h + ",left=" + posL + ",top=" + posT + ",toolbar=0,menubar=0,status=1,location=0,resizable=0,scrollbars=1";
  window.open(page,name,settings);
}