document.write("<table cellspacing=\"1\" cellpadding=\"0\" width=\"100%\" bgcolor=\"#dddddd\" border=\"0\">    <tbody>        <tr>            <td align=\"center\" bgcolor=\"#f5f5f5\" height=\"30\">            <table cellspacing=\"0\" cellpadding=\"3\" width=\"100%\" border=\"0\">                <form onsubmit=\"this.action=document.search.channelsearch.value\" method=\"get\" target=\"_blank\" name=\"search\">                    <tbody>                        <tr>                            <td align=\"right\" width=\"350\">站内搜索：<input size=\"40\" name=\"keywords\" /> </td>                            <td align=\"center\" width=\"120\"><select name=\"channelsearch\">                              <option value=\"/news/search.php\">新闻热点</option>                                                          <option value=\"/qikan/search.php\">电子期刊</option>                                                          <option value=\"/lunwen/search.php\">专家论著</option>                                                          <option value=\"/xh/search.php\">行业协会</option>                                                          <option value=\"/fagui/search.php\">政策法规</option>                                                          <option value=\"/sy/search.php\">图片新闻</option>                                                          <option value=\"/gq/search.php\">供求信息</option>                                                          <option value=\"/jobs/search.php\">求职招聘</option>                                                          <option value=\"/zjk/search.php\">专家库</option>                                                          <option value=\"/qiye/search.php\">企业库</option>                                                          <option value=\"/com/search.php\">产品库</option>                                                            <option value=\"/zhanhui/search.php\">展会信息</option>                                                            <option value=\"/help/search.php\">帮助中心</option>                             </select> </td>                            <td align=\"left\"><input type=\"hidden\" name=\"search\" value=\"1\" /> <input class=\"btn\" type=\"submit\" name=\"submit\" value=\" 搜 索 \" /> </td>                        </tr>                    </tbody>                </form>            </table>            </td>        </tr>    </tbody></table>");

