function openmp(loc) {
   var l = (screen.width) ? (screen.width - 500) / 2 : 80;
   var t = (screen.height) ? (screen.height - 430) / 2 : 50;
   var props = "resizable=no,scrollbars=no,toolbar=0,status=0,menubar=no,left=" + eval(l) + ",top=" + eval(t) + ",width=500,height=430";
   window.open(loc, "nWin", props);
}