function pop(pop_page,pop_name) {
  winprops = 'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=no, width=400, height=278, dependent=yes';
  var P = window.open(
		  pop_page, 
		  pop_name, 
		  winprops
		  );
  if (parseInt(navigator.appVersion) >= 4) { P.window.focus() };
  delete P;
}