$.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 = 0;
  });
};