var now = new Date();
function openWindow(winURL) {

  winName = 'win' + now.getTime();
  winWidth = 650;
  winHeight = 400;

  isNS = (navigator.appName == 'Netscape')
  winOffX = (isNS) ? window.screenX + 65 : window.screenLeft+ 60;
  winOffY = (isNS) ? window.screenY + 90 : window.screenTop + 70;

  winSpecs = "width=" + winWidth + ",height=" + winHeight + ",toolbar=no,menubar=no,scrollbars=yes,resizable=no,location=no,directories=no,status=no,left=" + winOffX + ",top=" + winOffY
  winVar = window.open(winURL,winName,winSpecs);
}