.NET用樣式做模式模態窗口層，彈出遮罩層

直接上代碼

顯示內容的div

   .div_content
   {
            display:none;
            position: fixed;
            top: 50%;
            left: 50%;
            width: 480px;
            margin-left:-240px;
            height: 300px;
            margin-top:-150px;
            padding: 0;
            border: 12px solid #3777BC;
            background-color: #F0F5F8;
            _position:absolute;
            z-index:1011;
            overflow: hidden;
}

遮蓋整個屏幕的div

.div_overlay
{
            display:none;
            position: fixed;
            top: 0%;
            left: 0%;
            width: 100%;
            height: 100%;
            background-color: black;
            z-index:1010;
            -moz-opacity: 0.8;
            opacity:.80;
            filter: alpha(opacity=80);
}