不弹出提示对话框的关闭窗口代码

<table width=\"100%\" border=\"0\" cellpadding=\"10\" cellspacing=\"0\" bgcolor=\"#EAF4F7\" style=\"border:solid 1px #BADBE2\">
             <tr>
                  <td align=\"center\">
                  <input class=\"button-2\" type=\"button\" value=\" 关闭当前窗口 \" onClick=\"window.opener=null;window.close();\">
                  </td>
             </tr>
            </table>