<html>
<head>
</head>
<style type="text/css">
div{
border: 1px solid #000000;
background-color:#ffffff;
height:200px;
width:300px;
}
</style>
<body onload="starts()">
<div id="myDiv1" style="display:block">div1</div>
<div id="myDiv2" style="display:none">div2</div>
<div id="myDiv3" style="display:none">div3</div>
<div id="myDiv4" style="display:none">div4</div>
<div id="myDiv5" style="display:none">div5</div>
</body>
<script language="javascript">
var num = 1;//默认显示第一个div
var times = 2000;//两秒切换一次
function starts(){
for(var i=1;i<6;i++){
var divObj = document.getElementById("myDiv"+i);
if(i==num){
divObj.style.display = "block";
}else{
divObj.style.display = "none";
}
}
num ++;
if(num ==6)num=1;//循环结束后重新指向第一个div
setTimeout('starts()',times);//每隔两秒调用starts()方法
}
</script>
</html>