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图片广告效果

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以下是代码片段:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<meta http-equiv="imagetoolbar" content="no" />
<title>SCA Ad Image Process</title>
<link rel="stylesheet" type="text/css" media="all" href="style.css" />
<style type="text/css">
body,html{
  margin:0px;
  height:100%;
  color:#666666;
  background:#000000;
  overflow:hidden;}
div#adBox{
  width:202px;
  height:260px;
  border:6px #999999 solid;
  position:absolute;
  overflow:hidden;
  top:50%;
  left:50%;
  margin:-133px 0px 0px -103px;}
div#adBox .imgBox{
  height:220px;
  width:200px;
  background:#666666;
  padding:1px 1px 0px 1px;}
div#adBox #control{
  width:201px;
  height:12px;
  background:#999999;
  overflow:hidden;
  border-left:1px #666666 solid;}
div#adBox #control div{
  width:12px;
  height:12px;
  font-size:9px;
  font-family:Arial, Helvetica, sans-serif;
  line-height:13px;
  text-indent:1px;
  color:#eeeeee;
  text-align:center;
  float:right;
  margin-left:1px;
  cursor:pointer;
  background:#666666;}
div#adBox #info{
  height:30px;
  overflow:hidden;
  background:#999999;
  border-top:1px #666666 solid;
  font-size:12px;
  color:#333333;
  line-height:30px;}
div#adBox #info a{
  color:#333333;
  text-decoration:none;}
div#adBox #info a:hover{
  color:#003366;
  text-decoration:underline;}
</style>
<script type="text/javascript">
var obj=document.getElementById;
var currentAd=0;
var adTimer;
var baseurl="http://bbs.blueidea.com/attachments/2007/1/3/";//广告图片的根目录
var maxinfo=18;//信息栏可显示的最长字数
var adDelay=3000;//广告切换时间
var controlItemId="controlitem";//根据自己的页面为跟踪条取ID前缀
var mapcolor="#003366";//Ad跟踪条颜色,建议与信息栏的a:hover一样
var imglink=new Array();
imglink[0]=new Array("maplestory_fGsUHCiylFEk.jpg","#","第二届冒险岛征文大赛火热报名中","")
imglink[1]=new Array("haizeiwang_yIdvHnbKRR5Z.jpg","#","《海贼王》第2部明日在江汉影城上映","")
imglink[2]=new Array("naruto_zxndhBwQnt1D.jpg","#","NARUTO,我最钟爱的角色投票","")
imglink[3]=new Array("lionking_g18UfhueAZlS.jpg","#","《狮子王2》制片方宣称进入最后剪辑合成阶段","")
imglink[4]=new Array("dragoncat_5OuvU8f1PpAR.jpg","#","荷兰动物学家已对龙猫的真实身份揭谜","")
imglink[5]=new Array("qianxun_wGdPvRpQAXU7.jpg","#","日本动漫高手12日赴武汉进行学术交流","")
for(i=0;i<imglink.length;i++){
    if(imglink[i][2].length<maxinfo)imglink[i][3]=imglink[i][2];
 else imglink[i][3]=imglink[i][2].substring(0,maxinfo-3)+"…";}
</script>
</head>

<body>
<div id="adBox">
<div class="imgBox"><img src="http://bbs.blueidea.com/attachments/2007/1/3/maplestory_fGsUHCiylFEk.jpg" style="filter: progid:DXImageTransform.Microsoft.GradientWipe(GradientSize=0.25,wipestyle=1,motion=forward);" id="show" alt="" /></div>
<div id="control"></div>
<div id="info"></div>
</div>
<script type="text/javascript">
for(i=0;i<imglink.length;i++){
var itemBox=document.createElement();
  itemBox.innerHTML="<div id=’"+controlItemId+i+"’>"+(i+1)+"</div>";
  control.appendChild(itemBox);}
var controlItem=obj("control").getElementsByTagName("div");
function changeImg(){
   obj("show").filters[0].apply();
   obj("show").src=baseurl+imglink[currentAd][0];
   obj("show").filters[0].play();
   obj("info").innerHTML="<a href=’"+imglink[currentAd][1]+"’ title=’"+imglink[currentAd][2]+"’>"+imglink[currentAd][3]+"</a>";
   for(i=0;i<controlItem.length;i++){
      controlItem[i].style.backgroundColor=(i==currentAd)?mapcolor:"#666666";}
   currentAd++;
   currentAd=(currentAd==imglink.length)?0:currentAd;
   adTimer=setTimeout("changeImg()",adDelay);}
   changeImg();
for(i=0;i<controlItem.length;i++){
   controlItem[i].onclick=function(){
      clearTimeout(adTimer);
      currentAd=parseInt(this.id.substring(this.id.length-1,this.id.length));
   changeImg();};
   }
obj("info").onmouseover=function(){clearTimeout(adTimer)};
obj("info").onmouseout=function(){adTimer=setTimeout("changeImg()",adDelay)};
</script>
</body>
</html>

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