function displaypopup(URL,name) {
  var windowW = 650;
  var windowH = 488;
  var sizeStr = "width=" + windowW + ",height=" + windowH;

  var windowX = (screen.width/2)-(windowW/2);
  var windowY = (screen.height/2)-(windowH/2);
  var posStr = "left=" + windowX + ",top=" + windowY;

  var attrStr = sizeStr + "," + posStr;

  popupWin = window.open(URL,name,'location=0,menubar=0,resizable=1,scrollbars=1,status=0,toolbar=0,'+attrStr);
  popupWin.focus();

  windowX = (screen.width/2)-(windowW/2);
  windowY = (screen.height/2)-(windowH/2);

  popupWin.moveTo(windowX,windowY);
}