點擊這裡查看效果
以下是代碼：
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>JS全屏漂浮廣告-</title>
<style type="text/css">
div#roll{width:100px;height:100px; background-color:#000; color:#fff; position:absolute;}
</style>
</head>
<body>
<div>
<div><h2>JS全屏漂浮廣告，移入光標停止移動·</h2><a href="http:///a/bjac/ara6jk5h.htm" target="_blank">原文</a></div>
</div>
<div id="roll">我是廣告<br /></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>