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<!DOCTYPE HTML>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Js广告_全屏漂浮广告</title>
<style type="text/css">
div#roll{width:100px;height:100px; color:#fff; position:absolute;}
</style>
</head>
<body>
<div id="roll">我是广告</div>
<script type="text/javascript">
var ggRoll = {
roll : document.getElementById("roll"),
speed : 20,
statusX : 1,
statusY : 1,
x : 100,
y : 300,
winW : document.documentElement.clientWidth - document.getElementById("roll").offsetWidth,
winH : document.documentElement.clientHeight - document.getElementById("roll").offsetHeight,
Go : function(){
this.roll.style.left=this.x+‘px‘;
this.roll.style.top=this.y+‘px‘;
this.x = this.x + (this.statusX? -1: 1)
if(this.x < 0) {this.statusX = 0}
if(this.x > this.winW) {this.statusX = 1}
this.y = this.y + (this.statusY? -1: 1)
if(this.y < 0) {this.statusY = 0}
if(this.y > this.winH) {this.statusY = 1}
}
}
var interval = setInterval("ggRoll.Go()", ggRoll.speed);
ggRoll.roll.onmouseover = function(){clearInterval(interval)};
ggRoll.roll.onmouseout = function(){interval = setInterval("ggRoll.Go()", ggRoll.speed)};
</script>
</body>
</html>
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原文地址：http://www.cnblogs.com/ninestart/p/4760862.html
