public function gethead()
{
$result = parent::gethead();
$result .= '<style type="text/css">
.doc_classes p { display:none;}
</style>
<script type="text/javascript">
$(document).ready(function() {
$("a[href=\'#\']", ".doc_classes").click(function() {
$(this).parent().children("p").slideToggle();
return false;
});
});
</script>';
return $result;
}
