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<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.3/jquery.min.js"></script>
<script>
$(document).ready(function(){
$(function () {
$('#homeup').click(function () {
$('body,html').animate({
scrollTop: 0
}, 800);
return false;
});
var scrollHeight = $(document).height();
$('#homedown').click(function () {
$('body,html').animate({
scrollTop: scrollHeight
}, 800);
return false;
});
});
});
</script>