求助jquery button没有name和id,怎么获取这个button

这是上传图片时候弹出的一个上传对话框，我怎么能获取这个button，要是有id或有name就好办了
确定
下面是全部代码

 <table class="aui_dialog">
              <tbody>
                <tr>
                  <td colspan="2" class="aui_header"><div class="aui_titleBar">
                      <div style="cursor: move;" class="aui_title">附件上传</div>
                      <a class="aui_close" href="javascript:/*artDialog*/;">×</a></div></td>
                </tr>
                <tr>
                  <td style="display: none;" class="aui_icon"><div style="background: transparent none repeat scroll 0% 0%;" class="aui_iconBg"></div></td>
                  <td style="width: 650px; height: 420px; visibility: visible;" class="aui_main"><div style="padding: 20px 25px;" class="aui_content aui_state_full">
                      <div style="display: none;" class="aui_loading"><span>loading..</span></div>
                      <iframe allowtransparency="true" style="width: 100%; height: 100%; border: 0px none;" name="Openthumb_images" src="/yingshiquan/index.php?

a=swfupload&amp;m=asset&amp;g=asset&amp;args=1,jpg|jpeg|gif|png|bmp,1,,,1&amp;module=&amp;catid=" frameborder="0"></iframe>
                    </div></td>
                </tr>
                <tr>
                  <td colspan="2" class="aui_footer"><div class="aui_buttons">
                      <button type="button" class="aui_state_highlight">确定</button>
                      <button type="button">取消</button>
                    </div></td>
                </tr>
              </tbody>
</table>