导航图片切换

<a id="javascript.a"><img src="images/0.jpg" id="javascript.img" border=0 style="filter:blendTrans(duration=2)" width="1003" height="198"></a>
<script>
<!--
var ImgSrc = new Array();//图片地址
  var oo=new Object(); 
 
 ImgSrc="../adminmanager/admincompany/images/200803061047442343.jpg|../adminmanager/admincompany/images/200803061006385625.jpg|../adminmanager/admincompany/images/200803061006554687.jpg|../adminmanager/admincompany/images/200803061039459843.gif".split("|");
for (var i=0;i<ImgSrc.length;i++){(new Image()).src = ImgSrc[i];}//预加载图片
var ImgAlt = new Array();//鼠标放上去显示的文字
ImgAlt[0] = ""
ImgAlt[1] = ""
ImgAlt[2] = ""
var ImgHerf =  new Array();//链接
ImgHerf[0] = "#"
ImgHerf[1] = "#"
ImgHerf[2] = "#"
var step=0;
function slideit(){
 //rewrite by haiwa@2005-7-7
 var oImg = document.getElementById("javascript.img");
 if (document.all){oImg.filters.blendTrans.apply();}
 oImg.src=ImgSrc[step];
 //document.getElementById("javascript.a").href=ImgHerf[step];
 //oImg.title=ImgAlt[step];
 if (document.all){oImg.filters.blendTrans.play();}
 step = (step<(ImgSrc.length-1))?(step+1):0;
 (new Image()).src = ImgSrc[step];//加载下一个图片
}
setInterval("slideit()",4500);
//-->
</script>