var winName   = 'SayangYouPopUp';

function getbrowserwidth()
{ if (navigator.userAgent.indexOf("MSIE") > 0)
  { return(document.body.clientWidth); }
  else
  { return window.outerWidth; }
}

function getbrowserheight()
{ if (navigator.userAgent.indexOf("MSIE") > 0)
  { return(document.body.clientHeight); } 
  else
  { return(window.outerHeight); }
}

function popProduct(folder, filename, winType)
{
  var X = getbrowserwidth() / 2;
  var Y = getbrowserheight() / 2;
  var winWidth  = "600";
  var winHeight = "450";
  var winTop    = window.screenTop + (Y - (winHeight/2));
  var winLeft   = window.screenLeft + (X - (winWidth/2));
  var winItem   = "resizable=no,scrollbars=no,status=yes,menubar=no,toolbar=no,fullscreen=no,top=" + winTop + ",left=" + winLeft + ",width=" + winWidth + ",height=" + winHeight;
  
  var myWindow = window.open ( 'dsp_product.htm?folder='+folder+'&filename='+filename, winName, winItem );
  if (myWindow.opener == null) myWindow.opener = self;
  myWindow.focus();
}