$(document).ready(function(){
        jQuery.validator.messages.required = "Required";
  $("form").validate({
                rules:  {
                        password: {required: true, minlength: 6},
                        username: {required: true}
                },
    invalidHandler: function(e, validator) {
      var errors = validator.numberOfInvalids();
      if (errors) {
        $("div.errorbox span").html("Please fix the errors below before continuing.");
        $("div.errorbox").show();
      } else {
        $("div.errorbox").hide();
      }
    },
    onkeyup: false,
    messages: {
      password: {
        minlength: "<br/>Must be 6 or more characters."
      }
    },
    debug:false
  });
});