变换的导航图片

下面为效果显示

脚本说明:
把如下代码加入<head>区域中
<script language=JavaScript> 
<!-- // BannerAD

var bannerAD=new Array(); 
var bannerADlink=new Array(); 
var adNum=0;

bannerAD[0]="search_banner.gif"; 
bannerADlink[0]="http://www.china.net/"; 
bannerAD[1]="search_banner.gif"; 
bannerADlink[1]="http://www.7stk.com"; 
bannerAD[2]="hzbanner.gif"; 
bannerADlink[2]="http://www.7stk.com"; 
bannerAD[3]="search_banner.gif"; 
bannerADlink[3]="http://www.7stk.com"; 
bannerAD[4]="468.gif"; 
bannerADlink[4]="http://www.7stk.com/"; 
bannerAD[5]="email-banner"; 
bannerADlink[5]="http://www.7stk.com";

var preloadedimages=new Array(); 
for (i=1;i<bannerAD.length;i++){ 
preloadedimages[i]=new Image(); 
preloadedimages[i].src=bannerAD[i]; 
}

function setTransition(){ 
if (document.all){ 
bannerADrotator.filters.revealTrans.Transition=Math.floor(Math.random()*23); 
bannerADrotator.filters.revealTrans.apply(); 
} 
}

function playTransition(){ 
if (document.all) 
bannerADrotator.filters.revealTrans.play() 
}

function nextAd(){ 
if(adNum<bannerAD.length-1)adNum++ ; 
else adNum=0; 
setTransition(); 
document.images.bannerADrotator.src=bannerAD[adNum]; 
playTransition(); 
theTimer=setTimeout("nextAd()", 5000); 
}

//--> 
</script>

<A onmouseover="displayStatusMsg();return document.returnValue" 
href="javascript:jump2url()"><IMG 
style="FILTER: revealTrans(duration=2,transition=20)" height=60 
src="search_banner.gif" width=468 border=1 
name=bannerADrotator> 
</A> 
<SCRIPT language=JavaScript>nextAd()</SCRIPT>