P@t wrote:

jQuery().ready( function() {
  jQuery("form[name='add_user']").submit( function () {
    jQuery("input[name='password']").attr("type", "password"); 
  });
});

Admin can see password text... but when you hit vadilate button, input text become password input for browser...

P@t, i'm a "little bit" (no, extremly !) short with jQuery. I dont't understand where to include this code. Could you explain me, please? It's a good start to learn about it, isn't it ?