</div>
<a id=”sideCatalogBtn” class=”” style=”visibility: visible;” href=”javascript:void(0);”></a>
<a id=”sideToolbar-up” style=”visibility: visible;” title=”返回顶部” href=”javascript:void(0)”></a>
</div>
</div>
</div>
<script type=”text/javascript” src=”../jquery-1.7.2.js”></script>
<script>
var slideInnerHeight = $(‘#sideCatalog-catalog dl’).height();
var slideOutHeight = $(‘#sideCatalog-catalog’).height();
var enableTop = slideInnerHeight – slideOutHeight;
var step = 50;
//点击向上的按钮
$(‘#sideCatalog-down’).bind(‘click’, function () {
if ($(this).hasClass(‘sideCatalog-down-enable’)) {
if ((enableTop – Math.abs(parseInt($(‘#sideCatalog-catalog dl’).css(‘top’)))) > step) {
$(‘#sideCatalog-catalog dl’).stop().animate({‘top’: ‘-=’ + step}, ‘fast’);
$(‘#sideCatalog-up’).removeClass(‘sideCatalog-up-disable’).addClass(‘sideCatalog-up-enable’);
} else {
$(‘#sideCatalog-catalog dl’).stop().animate({‘top’: -enableTop}, ‘fast’);
$(this).removeClass(‘sideCatalog-down-enable’).addClass(‘sideCatalog-down-disable’);
}
} else {
return false;
}
})
//点击向下的按钮
$(‘#sideCatalog-up’).bind(‘click’, function () {
if ($(this).hasClass(‘sideCatalog-up-enable’)) {
if (Math.abs(parseInt($(‘#sideCatalog-catalog dl’).css(‘top’))) > step) {
