function OpenNewWindow(strUrl, intHeight, intWidth)
{
  var strOpen = "left=50, top=50, directories=no, location=no, menubar=no, resizable=yes, scrollbars=yes, status=no, titlebar=no, toolbar=no";
  var strPopup = new String(strUrl)
  window.open(strPopup, 'OpenNewWindow', strOpen)
}

function OpenDemoscreen(strURL)
{
  OpenNewWindow(strURL, 500, 650);
}

function IsValidEmail(strEmail)
{
  var regExclude  = /[^@\-\.\w]|^[_@\.\-]|[\._\-]{2}|[@\.]{2}|(@)[^@]*\1/;
  var regCheck    = /@[\w\-]+\./;
  var regCheckEnd = /\.[a-zA-Z]{2,3}$/;
  if ((strEmail.search(regExclude)  != -1) ||
      (strEmail.search(regCheck)    == -1) ||
      (strEmail.search(regCheckEnd) == -1))
  {
    return false;
  }
  return true;
}