//打開織夢系統(tǒng)文件 /include/arc.archives.class.php 找到GetPreNext函數(shù)  

function GetPreNext($gtype='')  
   {  
       $rs = '';  
       if(count($this->PreNext)<2)  
       {  
           $aid = $this->ArcID;  
           $preR =  $this->dsql->GetOne("Select id From `dede_arctiny` where id<$aid And arcrank>-1 And typeid='{$this->Fields['typeid']}' order by id desc");  
           $nextR = $this->dsql->GetOne("Select id From `dede_arctiny` where id>$aid And arcrank>-1 And typeid='{$this->Fields['typeid']}' order by id asc");  
           $next = (is_array($nextR) ? " where arc.id={$nextR['id']} " : ' where 1>2 ');  
           $pre = (is_array($preR) ? " where arc.id={$preR['id']} " : ' where 1>2 ');  
           $query = "Select arc.id,arc.title,arc.shorttitle,arc.typeid,arc.ismake,arc.senddate,arc.arcrank,arc.money,arc.filename,arc.litpic,  
                       t.typedir,t.typename,t.namerule,t.namerule2,t.ispart,t.moresite,t.siteurl,t.sitepath  
                       from `dede_archives` arc left join dede_arctype t on arc.typeid=t.id  ";  
           $nextRow = $this->dsql->GetOne($query.$next);  
           $preRow = $this->dsql->GetOne($query.$pre);  
           if(is_array($preRow))  
           {  
               $mlink = GetFileUrl($preRow['id'],$preRow['typeid'],$preRow['senddate'],$preRow['title'],$preRow['ismake'],$preRow['arcrank'],  
               $preRow['namerule'],$preRow['typedir'],$preRow['money'],$preRow['filename'],$preRow['moresite'],$preRow['siteurl'],$preRow['sitepath']);  
               $this->PreNext['pre'] = "<a href='$mlink'>{$preRow['title']}</a> ";  
            $this->PreNext['preurl']=$mlink;  
               $this->PreNext['preimg'] = "<a href='$mlink'><img src=\"{$preRow['litpic']}\" alt=\"{$preRow['title']}\"/></a> ";   
           }  
           else  
           {  
               $this->PreNext['pre'] = "沒有了 ";  
            $this->PreNext['preurl'] = "javascript:void:";  
               $this->PreNext['preimg'] ="<img src=\"/templets/default/images/nophoto.jpg\" alt=\"對不起，沒有上一圖集了！\"/>";  
           }  
           if(is_array($nextRow))  
           {  
               $mlink = GetFileUrl($nextRow['id'],$nextRow['typeid'],$nextRow['senddate'],$nextRow['title'],$nextRow['ismake'],$nextRow['arcrank'],  
               $nextRow['namerule'],$nextRow['typedir'],$nextRow['money'],$nextRow['filename'],$nextRow['moresite'],$nextRow['siteurl'],$nextRow['sitepath']);  
               $this->PreNext['next'] = "下一篇：<a href='$mlink'>{$nextRow['title']}</a> ";  
            $this->PreNext['nexturl']=$mlink;  
               $this->PreNext['nextimg'] = "<a href='$mlink'><img src=\"{$nextRow['litpic']}\" alt=\"{$nextRow['title']}\"/></a> ";  
           }  
           else  
           {  
               $this->PreNext['next'] = "下一篇：沒有了 ";  
            $this->PreNext['nexturl'] = "javascript:void:";  
               $this->PreNext['nextimg'] ="<a href='javascript:void(0)' alt=\"\"><img src=\"/templets/default/images/nophoto.jpg\" alt=\"對不起，沒有下一圖集了！\"/></a>";  
           }  
       }  
       if($gtype=='pre')  
       {  
           $rs =  $this->PreNext['pre'];  
       }  
       else if($gtype=='preimg'){  
             
           $rs =  $this->PreNext['preimg'];  
       }  
       else if($gtype=='next')  
       {  
           $rs =  $this->PreNext['next'];  
       }  
       else if($gtype=='nextimg'){  
             
           $rs =  $this->PreNext['nextimg'];  
       }  
       else if($gtype=='preurl'){  
        $rs = $this->PreNext['preurl'];  
    }else if($gtype=='nexturl'){  
        $rs = $this->PreNext['nexturl'];  
    }  
      
       else{  
           $rs =  $this->PreNext['pre']."   ".$this->PreNext['next'];  
       }  
       return $rs;  
   }  

<li><a href="{dede:prenext get='preurl'/}" class="pr"><</a></li>  
<li><a href="{dede:prenext get='nexturl'/}" class="pr">></a></li>