首先把你的div设置style为overflow hidden
然后在div里面再添加一个div，假设叫做imgcontainer，在里面存放所有图片，图片以float: left方式显示，每个图片的宽度你是知道的，这样图片的个数*每个图片的宽度（必要的话再加上图片之间的间隔）设置为imgcontainer的总宽度。然后把div的宽度设置为显示3个图片的宽度。这样就可以保证只显示3个图片，多余的图片看不到。
然后在点击左右2个按钮的时候添加事件，每点击一次，让imgcontainer的marginLeft增加或减少一个图片的宽度（同样必要的时候加上图片之间的间隔距离），这样就使得图片列表在左右移动了。
下面是我的一个例子，跟你的需求可能不完全一样，大概做下参考：
HTML片段
<div id="pagecontent" class="pagecontent"><div id="nav_thumbs_prev" class="disabled" onclick="NavThumbsPrev()"></div>
<div id="photolist_container">
<ol id="photolist" class="photolist">
<li><figure onclick="ViewPhoto(this,'aaaaa')"><div class="samplecontainer"><img src="./img/singularity.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">aaaaa</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'bbbbb')"><div class="samplecontainer"><img src="./img/pyre.jpg" onload="DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">bbbbb</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'cccc')"><div class="samplecontainer"><img src="./img/newborn.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">cccc</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'dddd')"><div class="samplecontainer"><img src="./img/pyre.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">dddd</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'eeee')"><div class="samplecontainer"><img src="./img/singularity.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">eeee</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'ffff')"><div class="samplecontainer"><img src="./img/pyre.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">ffff</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'gggg')"><div class="samplecontainer"><img src="./img/newborn.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">gggg</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'hhhh')"><div class="samplecontainer"><img src="./img/pyre.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">hhhh</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'iiii')"><div class="samplecontainer"><img src="./img/newborn.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">iiii</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'jjjj')"><div class="samplecontainer"><img src="./img/singularity.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">jjjj</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'kkkk')"><div class="samplecontainer"><img src="./img/newborn.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">kkkk</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'llll')"><div class="samplecontainer"><img src="./img/pyre.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">llll</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'mmmm')"><div class="samplecontainer"><img src="./img/singularity.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">mmmm</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'nnnn')"><div class="samplecontainer"><img src="./img/pyre.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">nnnn</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'oooo')"><div class="samplecontainer"><img src="./img/singularity.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">oooo</figcaption></figure></li>
<li><figure onclick="ViewPhoto(this,'pppp')"><div class="samplecontainer"><img src="./img/pyre.jpg" onload="javascript:DrawSampleImage(this)" border="0" ></div><figcaption class="imagename">pppp</figcaption></figure></li>
</ol>
</div>
<div id="nav_thumbs_next" onclick="NavThumbsNext()"></div>
</div>
CSS部分
.photolist_container {margin: 0
/*Firefox*/
width: -moz-calc(100% - 30px)
/*chrome safari*/
width: -webkit-calc(100% - 30px)
/*Standard */
width: calc(100% - 30px)
float: left
height: 140px
overflow: hidden
}
ol.photolist {
background-color: black
margin: 0
margin-left: 1px
padding: 0
list-style: none
height: auto
padding: 0
display: block
height: 125px
}
ol.photolist>li {
margin: 0
margin-left: -1px
padding: 4px
text-align:center
display:inline
float: left
border: 1px solid #FF6699
width: 100px
}
#photolist figure {
margin: 0
padding: 0
text-align:center
border: 1px solid #000000
cursor: pointer
}
.samplecontainer {
height: 100px
width: 100px
text-align: center
margin: 0
padding: 0
border: 0
display: table-cell
vertical-align: middle
}
.samplecontainer>img {
margin: 0
padding: 0
border: 0
vertical-align:middle
}
Javascript部分
function MovePhotoList(size) {var photolist = document.getElementById("photolist")
var marginLeft = 1
if (photolist.style.marginLeft != "")
marginLeft = parseInt(photolist.style.marginLeft)
marginLeft = marginLeft + size
if (marginLeft <(document.getElementById("photolist_container").offsetWidth - photolist.offsetWidth))
{
marginLeft = document.getElementById("photolist_container").offsetWidth - photolist.offsetWidth
document.getElementById("nav_thumbs_next").setAttribute("class", "disabled")
}
else
{
document.getElementById("nav_thumbs_next").setAttribute("class", "enable")
}
if (marginLeft >1)
{
marginLeft = 1
document.getElementById("nav_thumbs_prev").setAttribute("class", "disabled")
}
else
{
document.getElementById("nav_thumbs_prev").setAttribute("class", "enable")
}
photolist.style.marginLeft = marginLeft + "px"
}
function NavThumbsPrev() {
var nav_thumbs_prev = document.getElementById("nav_thumbs_prev")
if (nav_thumbs_prev.getAttribute("class") != "disabled") {
MovePhotoList(56)
}
}
function NavThumbsNext() {
var nav_thumbs_next = document.getElementById("nav_thumbs_next")
if (nav_thumbs_next.getAttribute("class") != "disabled") {
MovePhotoList(-56)
}
}
ie浏览器中有自带的切换效果可供调用；其它浏览器的话得自己写程序定位，如淡入淡出可以利用设置css的opacity属性实现；
百叶窗可以利用程序生成N个div，每个div的背景图为你要加载的图，然后设置好每个div的位置即可
<!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>
<title>无标题页</title>
<script type="text/javascript" src="http://www.suqian.cm/js/ScrollPic.js"></script>
</head>
<body>
<style type="text/css">
.pic_top div{float:left}
.pic_yi{height:80pxwidth:80pxpadding:20px}
</style>
<div class="pic_top">
<div class="pic_left" id="LeftArr" style="height:100pxwidth:200px">鼠标点击向左（left）滚动</div>
<div class="pic_center" id="divAcrollPic1" style=" height:100pxwidth:400pxoverflow:hidden">
<div class="pic_yi">图片</div>
<div class="pic_yi">图片</div>
<div class="pic_yi">图片</div>
<div class="pic_yi">图片</div>
</div>
<div class="pic_right" id="RightArr" style="height:100pxwidth:200px">鼠标点击向右（right）滚动</div>
</div>
<script type="text/javascript">
// 左右点击滚动开始
var scrollPic1 = new ScrollPic()
scrollPic1.scrollContId = "divAcrollPic1"//内容容器ID
scrollPic1.arrLeftId = "LeftArr"//左箭头ID
scrollPic1.arrRightId = "RightArr"//右箭头ID
scrollPic1.frameWidth = 400//显示框宽度
scrollPic1.pageWidth = 100//翻页宽度
scrollPic1.speed = 10//移动速度(单位毫秒，越小越快)
scrollPic1.space = 10//每次移动像素(单位px，越大越快)
scrollPic1.autoPlay = false//自动播放
scrollPic1.autoPlayTime = 3//自动播放间隔时间(秒)
scrollPic1.initialize()//初始化
// 左右点击滚动结束
</script>
</body>
</html>
