<divid="box"><ul><liid="li01"><imgsrc="./images/01.jpg"alt=""></li><liid="li02"><imgsrc="./images/02.jpg"alt=""></li><liid="li03"><imgsrc="./images/03.jpg"alt=""></li><liid="li04"><imgsrc="./images/04.jpg"alt=""></li><liid="li05"><imgsrc="./images/05.jpg"alt=""></li></ul></div>css:
<style>
*{margin:0; padding:0;}ul{list-style: none;}#box{
width:360px;
height:70px;
border:1px solid #ccc;
padding-top:360px;
margin:100px auto;
overflow: hidden;
background:url(./images/01big.jpg) no-repeat;
}#boxul{
overflow: hidden; /*清除ul里的li标签浮动*/border-top:1px solid #ccc;
}#boxli{
float: left;
}</style>js:
<script>
window.onload = function(){functionfn(liid,bg){var box = document.getElementById("box");
var obj = document.getElementById(liid);
obj.onmouseover = function(){
box.style.backgroundImage = bg;
}
}
fn("li01","url(./images/01big.jpg)");
fn("li02","url(./images/02big.jpg)");
fn("li03","url(./images/03big.jpg)");
fn("li04","url(./images/04big.jpg)");
fn("li05","url(./images/05big.jpg)");
}
</script>

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