代码如下

<!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" />
<title>无标题文档</title>
<script language="javascript">
window.onload = function ()
{
    var tp = document.getElementById("tupian");
    var imgx = document.getElementsByTagName("img")[0];
    tp.innerHTML = "<img src='"+imgx.src+"'/>";
}
</script>
</head>

<body>
<img src="f1.JPG" width="229px" height="156px" />
<img src="f2.JPG" width="229px" height="156px" />
<img src="f3.JPG" width="229px" height="156px" />
<img src="f4.JPG" width="229px" height="156px" />
<img src="f5.JPG" width="229px" height="156px" />
<div id="imgsr"></div>
<div id="imgsrc" style="display:none">
<li><img src="f2.jpg" width="229px" height="156px" ></li>
<li><img src="f3.jpg" width="229px" height="156px" ></li>
</div>
<script language="javascript">
function showImg()
{
    document.getElementById("imgsr").innerHTML=document.getElementById("imgsrc").innerHTML;
}
showImg();
</script>
<div id="tupian"></div>
</body>
</html>