漂浮广告代码，带关闭功能的网页漂浮广告特效代码展示，该代码符合网页标准，直接点击运行按钮可以在线观察到特效效果。
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>带关闭按钮的网页漂浮广告代码knowsky.com</title>
</head>
<body>
<div id="img" style="position: absolute; left: 311; top: 815;visibility :hidden;" onmouseover="clearInterval(interval)" onmouseout="interval = setInterval('changePos()', delay)" align="right">
<a href="#" target="_blank"><img border="0" src="http://www.knowsky.com/img/200406301.jpg"></a><br><span style="CURSOR:hand;color:red;font-weight:bold" onclick="clearInterval(interval);img.style.visibility = 'hidden'">X</span>
</div>
<script language=javascript>
var xPos = 20;//from knowsky.com
var yPos = document.body.clientHeight;
var step = 1;
var delay = 30;
var height = 0;
var Hoffset = 0;
var Woffset = 0;
var yon = 0;
var xon = 0;
var pause = true;
var interval;
img.style.top = yPos;
function changePos() {
width = document.body.clientWidth;
height = document.body.clientHeight;
Hoffset = img.offsetHeight;
Woffset = img.offsetWidth;
img.style.left = xPos + document.body.scrollLeft;
img.style.top = yPos + document.body.scrollTop;
if (yon) {
yPos = yPos + step;
}
else {
yPos = yPos - step;
}
if (yPos < 0) {
yon = 1;
yPos = 0;
}
if (yPos >= (height - Hoffset)) {
yon = 0;
yPos = (height - Hoffset);
}
if (xon) {
xPos = xPos + step;
}
else {
xPos = xPos - step;
}
if (xPos < 0) {
xon = 1;
xPos = 0;
}
if (xPos >= (width - Woffset)) {
xon = 0;
xPos = (width - Woffset);
}
}
function start() {
img.style.visibility = "visible";
interval = setInterval('changePos()', delay);
}
start();
</script>
</body>
</html>
