jquery scroll

Hi folks,

I tried to build in this scroller for my wordpress posts:
http://jsfiddle.net/yyVbK/2/

but i doesn’t work. In my wordpress-blog #sidebar is #scroll-hold and #menu is #scroller. I also added this js to the head :

<script type="text/javascript" src="http://projekt46.cwsurf.de/wp-content/themes/twentyten/js/jquery-1.4.1.js"></script>
<script type="text/javascript" charset="utf-8">

jQuery(document).ready(function(){
	$('#up').bind('mousedown mouseup', function(event){
		if(event.type == 'mousedown'){
			$('#scroller').animate({"scrollTop": "-=2000px"}, 3000, 'linear');
		}else{
			$('#scroller').stop();
		}
	});

	$('#down').bind('mousedown mouseup', function(event){
		if(event.type == 'mousedown'){
			$('#scroller').animate({"scrollTop": "+=2000px"}, 3000, 'linear');
		}else{
			$('#scroller').stop();
		}
	});
});
</script>

Please help me. I don’t find the bug.
Your qlee46