javascript实现仿网易

来源：互联网发布：凯立德导航端口编辑：程序博客网时间：2024/05/16 06:04

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>Hello</title>
<meta name="author" content="年华@Master8.NET" />
<style>
body { background-color:#FFFFFF; margin:0;}
li,td,div,body {font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 12px; color: #333333; }
</style>
</head>
<body>
<script type="text/javascript">//必须body中引用
var width=300;
var height=200;
var bgcolor="#EEEEEE";//半透明窗口背景色DivMid
var trans=90;
var body = document.body;
var bodyWidth = parseInt((body.scrollWidth<body.clientWidth)?body.clientWidth:body.scrollWidth);
var bodyHeight = body.clientWidth; parseInt((body.scrollHeight<body.clientHeight)?body.clientHeight:body.scrollHeight);
var clientWidth=body.clientWidth;
var clientHeight=body.clientHeight;
//开始创建DivTop 最上信息层
var DivTop = document.createElement("div");
with(DivTop.style)
{
 display = "none";
 zIndex = 3;
 position = "absolute";
 border = "0px";
}
DivTop.id = "Div3";

body.appendChild(DivTop);
DivTop.innerHTML = "<table cellspacing=/"0/" cellpadding=/"0/" style=/"width:"+width+"px;border:#0051E5 1px solid;background:#FFFFFF;/"><tr><td style=/"background:#0051E5;color:#FFFFFF;font-size:13px;height:18px;/"><a href=/"javascript:Close();/" style=/"color:#FFFFFF;text-decoration:none;background:#CC4332;display:block;padding:1px;height:14px;width:14px;font-size:12px;overflow:hidden;/">×</a> 信息提示</td></tr><tr><td style=/"line-height:180%;padding:2px;/"> Master8.NET</td></tr></table>";

//开始创建DivMid 中间半透明层
var DivMid        = document.createElement("div");
with(DivMid.style)
{
        display = "none";
        zIndex = 2;
        position = "absolute";
        height = "100%";
        width = "100%";
        top = 0;
        left = 0;
        border = "0px";
        backgroundColor = bgcolor;
}
DivMid.id = "Div2";
body.appendChild(DivMid);

function $(Id) { return document.getElementById(Id); }
function isIE()
{
return (document.all && window.ActiveXObject && !window.opera) ? true : false;
}

function center(win)//将主窗口置于网页正中
{
 var s = parseInt(body.scrollTop + clientHeight/2 - height/2);
 win.style.top = (s<body.scrollHeight-height)?s:body.scrollHeight;
 var s = parseInt(body.scrollLeft + clientWidth/2 - width/2);
 win.style.left = (s<body.scrollWidth-width)?s:body.scrollWidth;
}

function Open(){

        with(body.style)//完全锁定背景层
        {
                width = clientWidth;
                height = clientHeight;
                overflow = "hidden";
        }
        with($('Div2').style)
        {
                width = bodyWidth;
                height = bodyHeight;
                overflow = "hidden";
                display = "";
                if (isIE()){
                        filter = " Alpha(Opacity="+trans+")";
                }else{
                        opacity = trans/100;
                }

        }
        with($('Div3').style)
        {
                display = "";
        }
        center($('Div3'));

}