<script type="text/javascript" >
$(document).ready( function() {
var tops=($(window).height()-300)/2+"px"

$('#pageFooter').css("position", "relative");
$('#300x250_r2').css("position", "relative");
$('#300x250_r3').css("position", "relative");
$('#pageFooter').css("z-index", "2");
$(window).scroll(function(){
var s = 300;
var l = $('.side_bar #sidebar_right').height();
var t = ($('.side_bar #sidebar_right').height()-s);

if($(window).scrollTop()<s && l>0) {
$('#sidebar_right').css("margin-top", $(window.parent).scrollTop());
};
if($(window).scrollTop()>t && l>0) {
$('.das-local-size-3').css("position", "fixed");
$('.das-local-size-3').css("top", tops);
};
if($(window).scrollTop()<t && l>0) {
$('.das-local-size-3').css("position", "relative");
$('.das-local-size-3').css("top", "0px");
};

})
});
</script>