(function(){
    jQuery.fn.clearForm = function() {
        return this.each(function() {
            var type = this.type, tag = this.tagName.toLowerCase();
            if (tag == 'form')
                return $(':input',this).clearForm();
            if (type == 'text' || type == 'password' || tag == 'textarea')
                this.value = '';
            else if (type == 'checkbox' || type == 'radio')
                this.checked = false;
            else if (tag == 'select')
                this.selectedIndex = -1;
        });
    };
 }());