关于thinkphp的ajax搜索加分页功能,点击第二页后无返回值

我用tp和ajax做了一个搜索加分页的功能。先写的分页代码,没有问题。然后再加上了搜索条件,返回第一页是没有问题的,但点击下方分页条的第二页后,页面就空白没有返回值了。请大家帮我看看:

<form>
<input type="text" value="" placeholder="请输入搜索内容。" id="sousuolan">
<button id="sousuojian" onclick="return false;">搜索</button>
</form>

<div class="list">
    <foreach name="list" item="vv">
        <div class="tile">{$vv.user_id}</div>
        <div class="content">{$vv.user_name}</div>
        <hr />
    </foreach>
    <div class="fenyetiao">{$page}</div> 
</div>



/*这是用于搜索栏的点击效果设计*/
$(function(){
   $('#sousuojian').click(function(){
   var $searchword=$("#sousuolan").val();
   if ($searchword=="") {
                        alert("搜索内容不得为空!");
                        $("#sousuolan").focus();
                        return false;
                        }
$.ajax({
type:'post',
url:'{:U('Dongzuo/search_page')}',
data:{searchword:$searchword},
success:function(res){$(".list").html(res);}
      })
     return false;});
            });


/*这是用于分页条的点击效果设计*/

$(function(){
    $(".fenyetiao a").live('click',function(){
         var pageObj = this;
         var url = pageObj.href
        $.ajax({
                type:'get',
                url:url,
                success:function(res){$(".list").html(res);}
                })
        return false;
    })
});



/*这是控制器的模块*/
class DongzuoController extends BaseController
{
    public function search_page()
    {$searchword = I('searchword');
     $userinfo   = D('UsersInfo');
     $count      = $userinfo->where("user_name like '%{$searchword}%'")->count();
     $Page       = new \Think\Page($count,5);
        $show       = $Page->show();                             
        $list       = $userinfo->where("user_name like '%{$searchword}%'")->limit($Page->firstRow.','.$Page->listRows)->select();
        if(IS_AJAX)
        {
            $this->assign('page',$show);
            $this->assign('list',$list);
            $html = $this->fetch('fenye/test1Page');
            $this->ajaxReturn($html);
        }
        $this->display();
    }
    }

/*这是fetch的test1Page*/

<foreach name="list" item="vv">
            <div class="tile">{$vv.user_id}</div>
            <div class="content">{$vv.user_name}</div>
    <hr />
</foreach>

<div class="fenyetiao">
    {$page}

</div>
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