<script type="text/javascript">
    $(function(){
        $('.signUp').validate({
            onfocusout: function (element) {
                validateWrap($(element).valid(),element);
            },
            rules:{
	            username:{required:true, email: true},
                password:{required:true}
            },
            messages:{
                all:{   required: 'This field is required'}
            }
        });
    })
</script>