function openEmailWin(alias) {
  winWidth = 250;
  winHeight = 150;
  winLeft = (screen.width-winWidth)/2;
  winTop = (screen.height-winHeight)/2;

  //half the screen width minus half the new window width (plus 5 pixel borders).
  winX = (window.screen.width/2) - (winWidth + 10);
  //half the screen height minus half the new window height (plus title and status bars).
  winY = (window.screen.height/2) - (winHeight + 50);

  window.open('/scripts/mail.php?alias='+alias,'emailWin', 'left=' + winX + ',top=' + winY + ',width=' + winWidth + ',height=' + winHeight + ',toolbar=0,location=0,status=0,menubar=0,scrollbars=0,resizable=0');
}