织梦dedecms上一篇下一篇调用标签：
{dede:prenext get='pre'/}
{dede:prenext get='next'/}
如何自定义织梦dedecms上一篇下一篇标签调用内容呢，例如修改为仅调用上一篇下一篇的链接呢：
找到include目录下的这个文件：arc.archives.class.php
找到这几行：
$this->PreNext['pre'] = "上一篇：<a href='$mlink'>{$preRow['title']}</a> ";
$this->PreNext['pre'] = "上一篇：没有了";
$this->PreNext['next'] = "下一篇：<a href='$mlink'>{$nextRow['title']}</a> ";
$this->PreNext['next'] = "下一篇：没有了 ";
分别替换为以下几行：
$this->PreNext['pre'] = "$mlink";
$this->PreNext['pre'] = "javascript:window.alert('上一篇：没有了');";
$this->PreNext['next'] = "$mlink";
$this->PreNext['next'] = "javascript:window.alert('下一篇：没有了');";
以上是文章内容模型的上一篇下一篇调用标签。图集模型的修改地方如下：
找到这几行：
*$this->PreNext['preimg'] = "<a href='$mlink'><img src=\"{$preRow['litpic']}\" alt=\"{$preRow['title']}\"/></a> ";
$this->PreNext['preimg'] ="<img src=\"/templets/default/images/nophoto.jpg\" alt=\"对不起，没有上一图集了！\"/>";
$this->PreNext['nextimg'] = "<a href='$mlink'><img src=\"{$nextRow['litpic']}\" alt=\"{$nextRow['title']}\"/></a> ";
$this->PreNext['nextimg'] ="<a href='javascript:void(0)' alt=\"\"><img src=\"/templets/default/images/nophoto.jpg\" alt=\"对不起，没有下一图集了！\"/></a>";
分别替换为以下几行：
$this->PreNext['preimg'] = "$mlink";
$this->PreNext['preimg'] ="javascript:window.alert('对不起，没有上一图集了！');";
$this->PreNext['nextimg'] = "$mlink";
$this->PreNext['nextimg'] ="javascript:window.alert('对不起，没有下一图集了！');";