如何实现这个页面中图片和图片说明滚动显示的效果？？？

<body>
<img id="image" /><div id="link"></div>
<script language="javascript">
var imgobj=document.getElementById("image");
var linkobj=document.getElementById("link");
var imgUrl=new Array();
var imgLink=new Array();
var imgtext=new Array();
var currentNum=1;
var timer=null;
imgUrl[1]='http://www.pcauto.com.cn/newcar/xczt/images/picpath/0302RAV4b.jpg';
imgtext[1]='<a href="http://www.pcauto.com.cn/zt/2006rnw/" target="_blank" class=linkblack>盛宴 2006日内瓦车展</a>';
imgLink[1]='http://www.pcauto.com.cn/zt/2006rnw/';
imgUrl[2]='http://www.pcauto.com.cn/news/nation/brand/mazda/images/picpath/pp060302011.jpg';
imgtext[2]='<a href="http://www.pcauto.com.cn/news/nation/brand/mazda/0603/366357.html" target="_blank" class=linkblack>马自达2将在南京生产</a>';
imgLink[2]='http://www.pcauto.com.cn/news/nation/brand/mazda/0603/366357.html';
imgUrl[3]='http://www.pcauto.com.cn/community/carnbeauty/images/picpath/017215190.jpg';
imgtext[3]='<a href="http://piclib.pcauto.com.cn/piclib/x_node_b_photos.jsp?nodeId=1651" target="_blank" class=linkblack>日内瓦车展美女如云</a>';
imgLink[3]='http://piclib.pcauto.com.cn/piclib/x_node_b_photos.jsp?nodeId=1651';
imgUrl[4]='http://www.pcauto.com.cn/homepage/index_jd/images/picpath/yangshi_215x180206.jpg';
imgtext[4]='<a href="http://adv.pconline.com.cn/adpuba/click?adid=19642&id=auto.shouye.jdtp1.&" target="_blank" class=linkblack>体验东风标致206快乐无休</a>';
imgLink[4]='http://adv.pconline.com.cn/adpuba/click?adid=19642&id=auto.shouye.jdtp1.&';
load();
function load()
{
imgobj.src=imgUrl[currentNum];
linkobj.innerHTML=imgtext[currentNum];
currentNum=currentNum==4?0:currentNum;
currentNum++;
timer=setTimeout("load()",1000);
}
</script>
</body>