日期:2014-05-17  浏览次数:20620 次

div+css遮罩事例
<!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=gb2312" /> 
<title>弹出提示</title> 
<style> 
* {margin:0;padding:0;font-size:12px;} 
html,body {height:100%;width:100%;} 
#content {background:#f8f8f8;padding:30px;height:100%;} 
#content a {font-size:30px;color:#369;font-weight:700;} 
#alert {border:1px solid #369;width:300px;height:150px;background:#e2ecf5;z-index:1000;position:absolute;display:none;} 
#alert h4 {height:20px;background:#369;color:#fff;padding:5px 0 0 5px;} 
#alert h4 span {float:left;} 
#alert h4 span#close {margin-left:210px;font-weight:500;cursor:pointer;} 
#alert p {padding:12px 0 0 30px;} 
#alert p input {width:120px;margin-left:20px;} 
#alert p input.myinp {border:1px solid #ccc;height:16px;} 
#alert p input.sub {width:60px;margin-left:30px;} 
</style>
</head>
<body> 
<div id="content"> 
<a href="#">注册</a> 
</div> 
<div id="alert"> 
<h4><span>现在注册</span><span id="close">关闭</span></h4> 
<p><label>用户名</label><input type="text" class="myinp" onmouseover="this.style.border='1px solid #f60'" onfoucs="this.style.border='1px solid #f60'" onblur="this.style.border='1px solid #ccc'" /></p> 
<p><label>密 码</label><input type="password" class="myinp" onmouseover="this.style.border='1px solid #f60'" onfoucs="this.style.border='1px solid #f60'" onblur="this.style.border='1px solid #ccc'" /></p> 
<p><input type="submit" value="注册" class="sub" /><input type="reset" value="重置" class="sub" /></p> 
</div> 
<script type="text/javascript"> 
var myAlert = document.getElementById("alert"); 
var reg = document.getElementById("content").getElementsByTagName("a")[0]; 
var mClose = document.getElementById("close"); 
reg.onclick = function() 

myAlert.style.display = "block"; 
myAlert.style.position = "absolute"; 
myAlert.style.top = "50%"; 
myAlert.style.left = "50%"; 
myAlert.style.marginTop = "-75px"; 
myAlert.style.marginLeft = "-150px";
mybg = document.createElement("div"); 
mybg.setAttribute("id","mybg"); 
mybg.style.background = "#000"; 
mybg.style.width = "100%"; 
mybg.style.height = "100%"; 
mybg.style.position = "absolute"; 
mybg.style.top = "0"; 
mybg.style.left = "0"; 
mybg.style.zIndex = "500"; 
mybg.style.opacity = "0.3"; 
mybg.style.filter = "Alpha(opacity=30)"; 
document.body.appendChild(mybg);
document.body.style.overflow = "hidden"; 
}
mClose.onclick = function() 

myAlert.style.display = "none"; 
mybg.style.display = "none"; 

</script> 
</body&g