简单弹出层

.black_overlay
{
    display: none;
    position: absolute;
    top: 0%;
    left: 0%;
    width: 100%;
    height: 100%;
    background-color: black;
    z-index: 1001;
    -moz-opacity: 0.8;
    opacity: .80;
    filter: alpha(opacity=20);
}
.white_content
{
    display: none;
    position: absolute;
    top: 35%;
    left: 40%;
    width: 240px;
    height: 150px;
    padding: 0;
    border: 1px solid #797979;
    background-color: white;
    z-index: 1002;
    overflow: auto;
}

<div id="light" class="white_content">
        <div style="background-color:#00ccff; height:20px; vertical-align:middle; line-height:20px;">
            添加到黑名单
        </div>
        <table border="0" cellpadding="0" cellspacing="0" style="padding:2px 0 0 2px;">              
           <tr>
                <td style="height:25px;">
                    股票代码：
                </td>
                <td>
                    <input id="txtsecuCode" type="text" onblur="ShowsecuName();" />
                </td>
           </tr> 
           <tr>
                <td style="height:25px;">
                    股票名称：
                </td>
                <td>
                    <div id="txtsecuName" style="color:Red;"></div>                    
                </td>
           </tr> 
           <tr>
                <td style="height:25px;">
                    所属板块：
                </td>
                <td>
                    <div id="txtblock" style="color:Red;"></div>                    
                </td>
           </tr> 
           <tr>
                <td style="height:25px;">
                    <input id="chkjin" type="checkbox" value="1" />金账户
                </td>
                <td>
                    <input id="chkyin" type="checkbox" value="2" />银账户
                </td>
           </tr> 
           <tr>
                <td colspan="2" align="center" style="height:25px;">
                    <input id="btnAddBlack" onclick="AddStockBlack();" type="button" value="确定" />
                      <input id="btnExit" onclick="Exit();" type="button" value="取消" />
                </td>
           </tr> 
        </table>
    </div>
    <div id="fade" class="black_overlay">
    </div>

 

//弹出层
        function showMsg() {
            $("#light").css("display","block");
            $("#fade").css("display","block");
        }