如何在DIV框加一个关闭按钮？？

Question

显示上层嘛 就把zIndex设置大点嘛 比如：100000

Answer 1

关闭窗体
<div id='error'>
错误信息：<input type='button' onclick='document.getElementById("error").style.display="none";' value='关闭本窗体'>
</div>

Answer 2

  <div id="error" style="position: absolute; z-index: 10000; display: none;">
        <div id='Div1'>
            <table>
                <tr>
                    <td>
                        错误信息：
                    </td>
                    <td>
                        <input type=button onclick="CloseErr();"
                            value="关闭">
                    </td>
                </tr>
            </table>
        </div>
        <table>
            <tr>
                <td>
                    错误信息！
                </td>
            </tr>
        </table>
    </div>
    <script>
    function CloseErr()
    {
       error.style.display="none"; 
    }
    function OpenErr()
    {
        //打开的位置
    }
    </script>