Abstracting forms

var AjaxForm = function(formId) {
    var form = document.getElementById(formId),
        postLoc = Drupal.absoluteUrl(jQuery(form).attr('action')),
        submit = jQuery(form).find('[type="submit"]');
    submit.click(function(e) {
        e.preventDefault();
        if(form.validator) {
            if(form.validate()) {
                jQuery.post(postLoc, jQuery(form).serialize());
            }
        } else {
            jQuery.post(postLoc, jQuery(form).serialize());
        }
    });

}