烟台seo向您推荐:随滚动条移动的DIV层

随滚动条移动的DIV层js代码,无论你的滚动条到哪里这个DIV层就跟到哪里!代码中例举了五个方向的滚动div层例子:包括左上方的div,左下方的div,右上方和右下方的DIV,还有一个是居中的div层。我们可以用在网站提示信息或网站漂浮的广告上,效果应该不错。

下面是其中正中(屏幕居中)的代码:

使用方法:把你要随滚动条滚动的网页内容或广告代码放入下面的“正中...”里。

<div id="Javascript.Div1" class="div" style="width: 240px; height:90px" align="center">正中...</div>
<SCRIPT LANGUAGE="JavaScript">
function sc1(){
 document.getElementById("Javascript.Div1").style.top=(document.documentElement.scrollTop+(document.documentElement.clientHeight-document.getElementById("Javascript.Div1").offsetHeight)/2)+"px";
 document.getElementById("Javascript.Div1").style.left=(document.documentElement.scrollLeft+(document.documentElement.clientWidth-document.getElementById("Javascript.Div1").offsetWidth)/2)+"px";
}
</SCRIPT>
完整的代码如下:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<HEAD>
<TITLE>code by:haiwa - 随滚动条移动的层 - 中国asp之家 - www.aspxhome.com</TITLE>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html" charset="gb2312">
</HEAD>
<style>
<!--
.div{
 position: absolute;
 border: 2px solid red;
 background-color: #EFEFEF;
 line-height:90px;
 font-size:12px;
 z-index:1000;
}
-->
</style>
<BODY>
<div id="Javascript.Div1" class="div" style="width: 240px; height:90px" align="center">正中...</div>
<SCRIPT LANGUAGE="JavaScript">
function sc1(){
 document.getElementById("Javascript.Div1").style.top=(document.documentElement.scrollTop+(document.documentElement.clientHeight-document.getElementById("Javascript.Div1").offsetHeight)/2)+"px";
 document.getElementById("Javascript.Div1").style.left=(document.documentElement.scrollLeft+(document.documentElement.clientWidth-document.getElementById("Javascript.Div1").offsetWidth)/2)+"px";
}
</SCRIPT>


<div id="Javascript.Div2" class="div" style="width: 240px; height:90px" align="center">左上...</div>
<SCRIPT LANGUAGE="JavaScript">
function sc2(){
 document.getElementById("Javascript.Div2").style.top=(document.documentElement.scrollTop)+"px";
 document.getElementById("Javascript.Div2").style.left=(document.documentElement.scrollLeft)+"px";
}
</SCRIPT>

<div id="Javascript.Div3" class="div" style="width: 240px; height:90px" align="center">左下...</div>
<SCRIPT LANGUAGE="JavaScript">
function sc3(){
 document.getElementById("Javascript.Div3").style.top=(document.documentElement.scrollTop+document.documentElement.clientHeight-document.getElementById("Javascript.Div3").offsetHeight)+"px";
 document.getElementById("Javascript.Div3").style.left=(document.documentElement.scrollLeft)+"px";
}
</SCRIPT>

<div id="Javascript.Div4" class="div" style="width: 240px; height:90px" align="center">右上...</div>
<SCRIPT LANGUAGE="JavaScript">
function sc4(){
 document.getElementById("Javascript.Div4").style.top=(document.documentElement.scrollTop)+"px";
 document.getElementById("Javascript.Div4").style.left=(document.documentElement.scrollLeft+document.documentElement.clientWidth-document.getElementById("Javascript.Div4").offsetWidth)+"px";
}
</SCRIPT>

<div id="Javascript.Div5" class="div" style="width: 240px; height:90px" align="center">右下...</div>
<SCRIPT LANGUAGE="JavaScript">
function sc5(){
 document.getElementById("Javascript.Div5").style.top=(document.documentElement.scrollTop+document.documentElement.clientHeight-document.getElementById("Javascript.Div5").offsetHeight)+"px";
 document.getElementById("Javascript.Div5").style.left=(document.documentElement.scrollLeft+document.documentElement.clientWidth-document.getElementById("Javascript.Div5").offsetWidth)+"px";
}
</SCRIPT>


<SCRIPT LANGUAGE="JavaScript">
<!--
function scall(){
 sc1();sc2();sc3();sc4();sc5();
}
window.onscroll=scall;
window.onresize=scall;
window.onload=scall;
//-->
</SCRIPT>
<div style="position: absolute; top: 0px; left: 0px; width: 10000px; height: 4000px;"></div>
</BODY>
</HTML>