$(document).ready(function() {
// hides the guestbook_formular as soon as the DOM is ready
// (a little sooner than page load)
$('div#guestbook_formular').hide();
// toggles the Guestbook_formular on clicking the noted link  
	  $('a#guestbook_toggle').click(function() {
	    $('#guestbook_formular').toggle(400);
	    return false;
	});
});