1.可以完成類似進度提示條，防止誤操作，代碼如下：
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>jQuery彈出層效果</title>
<meta content="" name="description" />
<script src="/uploads/common/js/jquery-1.4.2.min.js" type="text/javascript"></script>
<style type="text/css">
.black_overlay{
display: none;
position: absolute;
top: 0%;
left: 0%;
width: 100%;
height: 100%;
background-color: honeydew;
z-index:1001;
-moz-opacity: 0.8;
opacity:.60;
filter: alpha(opacity=80);
}
.white_content {
display: none;
position: absolute;
top: 20%;
left: 30%;
width: 400px;
height: 300px;
border: 8px solid lightblue;
background-color: white;
z-index:1002;
overflow: auto;
}
</style>
<script type="text/javascript">
//彈出隱藏層
function ShowDiv(show_div,bg_div){
document.getElementById(show_div).style.display='block';
document.getElementById(bg_div).style.display='block' ;
var bgdiv = document.getElementById(bg_div);
bgdiv.style.width = document.body.scrollWidth;
// bgdiv.style.height = $(document).height();
$("#"+bg_div).height($(document).height());
};
//關閉彈出層
function CloseDiv(show_div,bg_div)
{
document.getElementById(show_div).style.display='none';
document.getElementById(bg_div).style.display='none';
};
</script>
</head>
<body>
<input id="Button1" type="button" value="點擊彈出層" οnclick="ShowDiv('MyDiv','fade')" />
<!--彈出層時背景層DIV-->
<div id="fade" class="black_overlay">
</div>
<div id="MyDiv" class="white_content">
<div style="text-align: right; cursor: default; height: 40px;">
<span style="font-size: 16px;" οnclick="CloseDiv('MyDiv','fade')">關閉</span>
</div>
jQuery彈出層效果，有關閉按鈕，代碼簡單易懂，你可以隨意修改彈出層的參數。
</div>
</body>
</html>
