本文实例为大家分享了基于javascript实现右下角浮动广告效果，供大家参考，具体内容如下
效果图：
具体代码：
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>右下角广告代码</title>
<script type="text/javascript">
window.onload = getMsg;
window.onresize = resizeDiv;
window.onerror = function(){}
function $(id) {return document.getElementById(id);}
//短信提示使用(asilas添加)
var divT,divL,divW,divH,docH,docW,docST,docSL,objTimer,i = 0;
function getMsg()
{
try{
divT = parseInt($("eMeng").style.top,10); //层top位置
divL = parseInt($("eMeng").style.left,10); //层left位置
divH = parseInt($("eMeng").offsetHeight,10);//层宽
divW = parseInt($("eMeng").offsetWidth,10);//层高
docW = document.documentElement.clientWidth;//窗口宽
docH = document.documentElement.clientHeight;//窗口高
docST=document.documentElement.scrollTop;
docSL=document.documentElement.scrollLeft;
$("eMeng").style.top = parseInt(docST,10) + docH + 10+"px";
$("eMeng").style.left = parseInt(docSL,10) + docW - divW+"px";
$("eMeng").style.visibility="visible";
objTimer = setInterval("moveDiv()",10);
}
catch(e){}
}
function resizeDiv()
{
try{
divH = parseInt($("eMeng").offsetHeight,10);
divW = parseInt($("eMeng").offsetWidth,10);
docW = document.documentElement.clientWidth;
docH = document.documentElement.clientHeight;
$("eMeng").style.top = docH - divH + parseInt(document.documentElement.scrollTop,10)+"px";
$("eMeng").style.left = docW - divW + parseInt(document.documentElement.scrollLeft,10)+"px";
}
catch(e){}
}
function moveDiv()
{
try{
if(parseInt($("eMeng").style.top,10) <= (docH - divH + parseInt(document.documentElement.scrollTop,10)))
{
window.clearInterval(objTimer)
objTimer = setInterval("resizeDiv()",1)
}
divT = parseInt($("eMeng").style.top,10);
$("eMeng").style.top = divT - 1+"px";
}
catch(e){}
}
function closeDiv()
{
$('eMeng').style.visibility='hidden';
if(objTimer) window.clearInterval(objTimer)
}
</script>
<div id="eMeng" style="z-index: 99999; visibility:hidden; left: 0px; width: 252px; position: absolute; top: 0px; height: 213px; background:url(http://image.5fad.com/5/img/ad_bg.gif)">
<div style=" height:28px">
<div style=" width:20px; height:20px; float:right; margin:5px 5px 0 0; cursor:pointer" onclick="closeDiv()"></div>
</div>
<div style="width:225px; height:164px; margin:0 auto;"><a href="http://5.5fad.com/star/pur_detial.aspx?news=138" target="_blank"><img src="http://image.5fad.com/5/ad/ad01.jpg" width="225" height="164" border="0" /></a></div>
</div>
</body>
</html>
希望本文所述对大家学习javascript程序设计有所帮助。