在猪跑啦上面看到这段代码

http://www.drupalla.com/node/560

//上一篇
//下一篇
//style: img ： 图片形式 text：文字形式
//pn 1:prev    2:next
function yourmodulename_get_pn_node($nid, $type, $style = 'img', $pn = 1)
{
$output = "";
$sql = "SELECT node.nid AS nid, node.title AS node_title, node.created AS node_created, 
files.uri AS uri FROM {node} node left join (SELECT image.entity_id, 
f.uri FROM {field_data_field_image} image LEFT JOIN {file_managed} f 
ON image.field_image_fid=f.fid) files ON node.nid=files.entity_id 
WHERE node.status = '1' AND node.type='".$type."'";
switch ($pn) {
    case 1:
        $sql .= " AND node.nid <" .$nid;
  $title = "上一页";
        break;
    case 2:
        $sql .= " AND node.nid >" .$nid;
  $title = "下一页";
        break;
} 
$sql .= " ORDER BY node_created desc LIMIT 1 OFFSET 0";
$result = db_query($sql); //也可以db_select 方式, 写法类似。
$output .= "<div class=\"pn pn".$pn."\">";
while ($row = $result->fetchObject()) {
$output .= "<div class=\"img\">";
if($row->uri)
{$output .= l("<img src=\"".file_create_url($row->uri)."\" 
alt=\"".$row->node_title."\" height=\"75\">", "node/".$row->nid, array('html'=>true));}
else
{$output .= l("<img src=\"/sites/default/files/default_images/no-img.gif\" 
alt=\"".$row->node_title."\" height=\"75\">", "node/".$row->nid, array('html'=>true));}
$output .= "</div>";
$output .= l($title, "node/".$row->nid);
}
$output .= "</div>";
return $output;
}

然后在node.php输出

<?php 
print module_invoke('yourmodulename', 'get_pn_node', $nid, $type, 'img', 1); //上一篇
?>
<?php 
print module_invoke('yourmodulename', 'get_pn_node', $nid, $type, 'img', 2); //下一篇
?>

现在输出的是这样子

<div class="pn pn1"><div class="img"><a href="/works/gym"><img src="http://website.com/sites/default/files/project-1-landscape.jpg" alt="健身会所" height="75"></a></div><a href="/works/gym">上一页</a></div>

<div class="pn pn2"><div class="img"><a href="/works/app"><img src="http://website.com/sites/default/files/mobile-app-2.jpg" alt="APP演示网站" height="75"></a></div><a href="/works/app">下一页</a></div>

现在我想定制成这样子，图片可以不要

<div class="col-xs-4">
  <a href="/works/gym" class="text-left">
    <h5 class="mrg-top-15"><i class="ti-arrow-left pdd-right-10 font-size-10"></i> 上一页</h5>
  </a>
</div>
<div class="col-xs-4">
  <a href="single-2.html" class="text-right">
    <h5 class="mrg-top-15">下一页 <i class="ti-arrow-right pdd-left-10 font-size-10"></i></h5>
  </a>
</div>

请问应该怎么修改这段代码？