I am stuck on a problem with the jquery.validate.js plug-in. 

The field-level validation works fine until the user changes a value that was valid to an invalid value. When the user leaves focus of the field, the add/remove class (errorPlacement function) does not kick in. 

I assume it is because "success" was hit once and it is no longer validating the field.
How can I get the code to continue to run the function under errorPlacement when an invalid value is entered?

$.validator.setDefaults({
    debug: true,   
    errorElement: "span",
    errorPlacement: function(error, element) {
            error.appendTo(element.parent("div").children(".fielderrorholder"));  // i don't display the error msg.
            element.parent("div").removeClass("validatesuccess");
            element.parent("div").addClass("validateerror");
    },

    success: function(label) {
            label.parent("div").parent("div").removeClass("validateerror");
            label.parent("div").parent("div").addClass("validatesuccess");
        }
    }
});

Thank you for your help.