<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>

<title></title>

<script src="jquery-1.7.1.min.js"></script>

<style type="text/css">

body {

font-size:12px;

}

#scroll {

position:fixed; top:300px; right:100px;

}


.scrollItem {

width:20px; height:70px;border:#e1e1e1 1px solid; cursor:pointer; text-align:center; padding-top:10px;

}

</style>

<script type="text/javascript">

$(function () {

var speed = 1000;//滚动速度


//回到顶部

$("#toTop").click(function () {

$("body").animate({ "scrollTop": 0 }, speed);

});

//回到底部

var windowHeight = parseInt($("body").css("height"));//整个页面的高度

$("#toBottom").click(function () {

$("body").animate({ "scrollTop": windowHeight }, speed);

});



});

</script>


</head>

<body>

<div ></div>

<p id="liuyan">这里是留言位置,回到这儿来额</p>

<div ></div>

<div id="scroll">

<div class="scrollItem" id="toTop">回到顶部</div>

<div class="scrollItem" id="toBottom">回到顶部</div>

</div>

</body>

</html>


附件:http://down.51cto.com/data/2363984