100分请教高手，这个渐变翻页特效javascript是如何用的？

这是Filter的应用，给你简化的
<html>
<body>
<table border="1" width="100%">
<tr><td id="xxx" style="filter:  progid:DXImageTransform.Microsoft.GradientWipe(GradientSize=0.25,wipestyle=0,motion=forward);">gggggggggggggggggggggggggggg</td>
</tr>
</table>
</body>
<script>
var tdstr=["aaaaaaaaaaaaaaaaaaaaaaa","wwwwwwwwwwwwwwwwwwwwwwwwwww","kkkkkkkkkkkkkkkkkkkkk"]
var i=0
var hot_query_td = document.getElementById('xxx');
setTimeout('myplay()', 1000);
function myplay()
{
hot_query_td.filters[0].apply();
hot_query_td.innerHTML=tdstr[i];
hot_query_td.filters[0].play();
setTimeout('myplay()', 1000);
i +=1;
if (i>2){i=0};
}
</script>
</html>