抛砖引玉
<img id="myimg" src="1.jpg" style="filter:blendtrans(duration=1);"/>
<script type="text/javascript">
var num_imgs=3;//1.jpg 2.jpg 3.jpg
var cur=1;
function img_slide(){
var o=document.getElementById("myimg");
o.filters[0].apply();
if(cur==num_imgs) cur=1; else cur++;
o.src=cur+".jpg";
o.filters[0].play();
}
setInterval("img_slide()",3000);
</script>