dedecms搜索框制作

<form method="post" action="{dede:global.cfg_basehost/}/plus/search.php" name="formsearch" class="search"><input type="hidden" value="www.dedecms.com" name="domains"><input type="hidden" value="" name="kwtype">
                    <table width="100%" height="100%" border="" cellspacing="" cellpadding="">
                               <tr>
                                 <td width=""> </td>
                                 <td width="" valign="middle"><input class="keywords"   name="q" type="text" id="search"  value="请输入搜索内容...">
                                <input type="hidden" value="titlekeyword" name="searchtype" >
                                </td>
                                 <td width=""> </td>
                                 <td> <button type="submit" class="submit"></button> </td>
                               </tr>
                         </table>
                       </form>