document.write("<form onSubmit=\"this.action=document.search.channelsearch.value\" method=\"get\" target=\"_blank\" name=\"search\"><input class=\"form\" size=\"40\" name=\"keywords\" />&nbsp;&nbsp;<select name=\"channelsearch\"><option value=\"/movie/search.php\">学习课程</option> </select> <input class=\"input\" type=\"hidden\" name=\"search\" value=\"1\" />&nbsp;&nbsp;<input type=\"submit\" name=\"submit\" value=\" 搜 索 \" /></form>");