$item_prev = xz_array(xz_mysql_vod(array(
'cid'=>$vod_cid,
'id_max'=> $vod_id,
'order'=> 'vod_id',
'sort'=> 'desc',
'limit'=> '1',
'status'=> '1',
'cache_name'=> 'default',
'cache_time'=> 'default',
'field'=>'list_id,list_dir,vod_id,vod_ename,vod_name,vod_jumpurl'
)));
$item_next = xz_array(xz_mysql_vod(array(
'cid'=>$vod_cid,
'id_min'=> $vod_id,
'order'=> 'vod_id',
'sort'=> 'asc',
'limit'=> '1',
'status'=> '1',
'cache_name'=> 'default',
'cache_time'=> 'default',
'field'=>'list_id,list_dir,vod_id,vod_ename,vod_name,vod_jumpurl'
)));