$.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;
   });
      };