#bg img{margin:0 5pxborder:1px solid #dddwidth:80pxheight:80px}
#bg img.on{border-color:#f00}
</style>
<div id="bg">
<img src="缩略图地址" rel="大图地址">
<img src="缩略图地址" rel="大图地址">
<img src="缩略图地址" rel="大图地址">
</div>
//引入jQuery.js
<script>
var $mg=$("#bg").find("img")
$mg.click(function(){
var big=$(this).attr("rel")
$("body").css("background","url("+big+") 50% 50% no-repeat")
$(this).addClass("on").siblings("img").removeClass("on")
})
</script>
上面就是最简单的背景切换加缩略图，需要引入jQuery哈
试一下这个代码（直接替换你发出的代码）：<div id="KinSlideshow" style="visibility:hidden">
{dede:arclist row='6' orderby='pubdate' type='image.' imgwidth='600' imgheight='300'}
<a href="[field:arcurl/]" target="_blank" alt="[field:title/]">[field:image/]</a>
{/dede:arclist}
</div>
解释：
{dede:arclist } {/dede:arclist} 这是数据循环的调用
row='6' 指调用6条信息
orderby='pubdate' 指按更新时间排序
type='image.' 指有上传缩略图或勾选图片属性的文章
imgwidth='600' imgheight='300'指图片的宽和高
[field:arcurl/] 指调出的图片所在文章的链接
[field:title/] 指文章标题
[field:image/] 指图片，已包含img标签
<!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/htmlcharset=utf-8" />
<title>显示缩略图</title>
</head>
<script type="text/javascript">
//显示缩略图
function DrawImage(ImgD, width_s, height_s) {
/*var width_s=139
var height_s=104
*/
var image = new Image()
image.src = ImgD.src
if (image.width >0 &&image.height >0) {
flag = true
if (image.width / image.height >= width_s / height_s) {
if (image.width >width_s) {
ImgD.width = width_s
ImgD.height = (image.height * width_s) / image.width
} else {
ImgD.width = image.width
ImgD.height = image.height
}
} else {
if (image.height >height_s) {
ImgD.height = height_s
ImgD.width = (image.width * height_s) / image.height
} else {
ImgD.width = image.width
ImgD.height = image.height
}
}
}
/*else{
ImgD.src=""
ImgD.alt=""
}*/
}
</script>
</head>
<body>
<div>
<div>
<div>
<img src="D:\\02.9.3.3\1.jpg" align="center"
onclick="DrawImage(this,200,200)" alt="点击我！">
</div>
</div>
</div>
</body>
</html>
