           <li class="google_s">谷 歌</li>
              <li class="bing_s">必 应</li>
              <li class="haosou_s">好 搜</li>
              <li class="sougou_s">搜 狗</li>
            </ul>
          </div>
          <input type="text" name="wd" id="input" maxlength="100" autocomplete="off">
          <div class="qingkong" id="qingkong" title="清空">x</div>
        </div>
        <button id="so-btn"><i class="icon icon-search visible-xs"></i><span class="hidden-xs">搜 索</span></button>
 