<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>slide</title>
<style type="text/css">
html,body{
width:100%;
height:100%;
margin:0px;
border:0px;
text-align:center;
}
div{
margin:auto;
overflow:hidden;
}
</style>
</head>
<body>
<script type="text/javascript">
function tag(obj){
return document.getElementsByTagName(obj)[0];
}
window.onload=function(){
setTimeout("slideUp();",1000);
}
function slideUp(){
if(tag("div").offsetHeight>0){
if(tag("div").offsetHeight>10){
tag("div").style.height=tag("div").offsetHeight-10+"px"
setTimeout("slideUp();",20);
}else{
tag("div").style.display="none";
tag("img").src="http://www.codefans.net/jscss/demoimg/wall8.jpg";
tag("div").style.display="block";
slideDown();
}
}
}
function slideDown(){
if(tag("div").offsetHeight<80){
if(tag("div").offsetHeight<70){
tag("div").style.height=tag("div").offsetHeight+10+"px";
setTimeout("slideDown();",20);
}else{
tag("div").style.height="80px";
}
}
}
</script>
<div><img src="http://www.codefans.net/jscss/demoimg/wall8.jpg"></div>
版本所有：<strong><a href="http://www.codefans.net/">源码爱好者</a></strong>
</body>
</html>
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