<!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>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>越狱的囚徒</title>
<style type="text/css">
#zhezhao{ /*遮罩层 先隐藏起来 后面我会通过JS修改display: 为block 让他显示出来*/
position:absolute;
z-index:1000;
background:#ccc;
width:100%;
height:100%;
opacity: 0.8;
filter:alpha(opacity=80);
display:none;
}
#denglu{ /*登陆层 先隐藏起来 后面我会通过JS修改display: 为block 让他显示出来*/
position:absolute;
z-index:2000;
width:100%;
height:200px;
margin:150px auto;
display:none;
}
#denglu table{ /*居中显示*/
margin:auto;
}
.content{
width:800px;
margin:0 auto;
}
#zuo{ /*这个是两边浮动的广告对联，一(左)一右*/
position:absolute;
left:3px;
top:100px;
border:5px solid purple;
background:#ccc;
color:purple;
font-size:50px;
text-align:center;
height:200px;
width:85px;
z-index:2000;
}
#you{ /*这个是两边浮动的广告对联，一左一(右)*/
position:absolute;
right:3px;
top:100px;
border:5px solid purple;
background:#ccc;
color:purple;
font-size:50px;
text-align:center;
height:200px;
width:85px;
z-index:2000;
}
</style>
<script type="text/javascript">
var h=0;
function fun1(){ //这里让登陆框 和 广告框 随着滚动条也自动滚动 保持一直可以让用户看到
h=document.body.clientHeight;
document.getElementById('zhezhao').style.height=h+"px";
window.onscroll=function(){
//改变登录框的位置
//获取滚动条离开上方的距离
var t=document.body.scrollTop+document.documentElement.scrollTop;//兼容谷歌和火狐浏览器
//把这个值，交给denglu这div的margin-top
document.getElementById('denglu').style.marginTop=150+t+"px";
document.getElementById('zuo').style.top=100+t+"px";
document.getElementById('you').style.top=100+t+"px";
}
}
function show(){ //激活他们
//遮罩层
document.getElementById('zhezhao').style.display='block';
//登录层
document.getElementById('denglu').style.display='block';
}
function hide(){ //隐藏他们
//遮罩层
document.getElementById('zhezhao').style.display='none';
//登录层
document.getElementById('denglu').style.display='none';
}
</script>
</head>
<body style="margin:0;" onload="fun1();">
<div id="zuo">美<br/>女</div>
<div id="you">帅<br/>哥</div>
<div id="zhezhao"></div>
<div id="denglu">
<div>
<table bgcolor="#ccc" width="350">
<tr>
<td>登录</td><td><a href="javascript:hide();">关闭</a></td>
</tr>
<tr>
<td>账号</td>
<td><input type="text"/></td>
</tr>
<tr>
<td colspan="2"><input type="submit" value="登录"/></td>
</tr>
</table>
<a id="a-1" href="javascript:void();">test</a>
</div>
</div>
<a href="javascript:show();">登录</a>
<div class="content" style="background:red;">
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<br/><br/><br/><br/><br/><br/><br/><br/>
<br/><br/><br/><br/><br/><br/><br/><br/>
</div>
<div class="content" style="background:green;">
<br/><br/><br/><br/><br/><br/><br/><br/>
<br/><br/><br/><br/><br/><br/><br/><br/>
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</div>
<div class="content" style="background:blue;">
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</div>
<br/>
<br/>
</body>
</html>