<form id="searchform" name="searchform" method="get" action="<?php echo home_url(); ?>/index.php">
  <div>
    <input class="xbut" type="text" id="s" name="s" />
    <input class="xbun" type="submit" id="searchsubmit" value="站内搜索" />
  </div>
</form>
