function cw(myurl) {
  var winurl = myurl;
  awin = window.open(winurl, "awin", "width=600,height=400,outerWidth=600,outerHeight=400,location=no,menubar=no,status=no,scrollbars=yes,toolbar=no,resizable=yes");
  awin.focus();
  awin.resizeTo(600,400);
  awin.moveTo(screen.width/2-300, 0);
}