scriptaculous - scroll within div:overflow

[Spudhead]

I want to scroll content into and out of a viewport that's defined by a div with overflow:hidden. But when I use the code below, although scrolling happens, the content that was previously hidden is still hidden - images, for instance, are cut in half.

The page validates as XHTML transitional, and behaves exactly the same in FF2, IE7, Safari 3 and Opera 9 (WinXP).

Clearly I'm misunderstanding something about Effect.Move() but the Scriptaculous documentation doesn't offer any clues and... well, if I was smart enough to figure out the code in effects.js I'd have written my own....


<style type="text/css">
#pagination_container{position:relative; width: 420px; height: 148px; overflow:hidden;}
#pagination_content{position: relative; width: 10000px; height: 148px;}
.pagination_item{width:125px; float:left; margin:0 5px; font-size:10px; color:#b2b2b2; text-align:center;}
.pagination_item img{border:5px solid #e6e6e6;}
.pagination_item a{display:block; font-size:12px; color:#24a9ec; text-decoration:none;}
</style>


<script type="text/javascript">

document.observe("dom:loaded", function() {

$('pagination-prev').observe('click', function(event){
new Effect.Move($('pagination_content'),{x: 420, y: 0, duration: 1, mode:'relative'})
Event.stop(event);
});

$('pagination-next').observe('click', function(event){
new Effect.Move($('pagination_container'),{x: -420, y: 0, duration: 1, mode:'relative'})
Event.stop(event);
});

});

</script>


<div id="latestwork_content">

<p class="grey">Lorem ipsum yada yada</p>

<div id="pagination_container">

<div id="pagination_content">

<div class="pagination_item"><img src="img/thumb_lg.jpg" width="115" height="113" alt="thumb" /><a href="">Some</a>Content</div>
<div class="pagination_item"><img src="img/thumb_lg.jpg" width="115" height="113" alt="thumb" /><a href="">Some</a>Content</div>
<div class="pagination_item"><img src="img/thumb_lg.jpg" width="115" height="113" alt="thumb" /><a href="">Some</a>Content</div>
<div class="pagination_item"><img src="img/thumb_lg.jpg" width="115" height="113" alt="thumb" /><a href="">Some</a>Content</div>
<div class="pagination_item"><img src="img/thumb_lg.jpg" width="115" height="113" alt="thumb" /><a href="">Some</a>Content</div>
<div class="pagination_item"><img src="img/thumb_lg.jpg" width="115" height="113" alt="thumb" /><a href="">Some</a>Content</div>
<div class="pagination_item"><img src="img/thumb_lg.jpg" width="115" height="113" alt="thumb" /><a href="">Some</a>Content</div>

</div>

</div>

<a id="pagination-prev" class="bodylink left" href="#">&laquo; Previous</a>
<a id="pagination-next" class="bodylink right" href="#">&raquo; Next</a>

</div>

[Spudhead]

AAAAAAAAAAAAAHHHHHHHHHHHHHHHHHHGGGGGGHHHHHHHHHHHHH

:mad::mad:

new Effect.Move($('pagination_container')

i iz teh dumb :(