Next and previous video not showing

Even if there are few movies in channel, i only can see no previous and no next video picures instead of
thumbnails of movies which are in this channel.
i did not change the code in here, but anyway i'm pasting it.
Anyone can advise on this one?

Code:

---

<td align=middle width="104" style="padding-left:5px;">
{if $rowcount eq "$rowmincount"}
[img]{$baseurl}/templates/images/no_prev.gif[/img]
&lt; PREV
{else}
{if $link[0].vid ne ""}
<a href="{$baseurl}/view/{$link[0].vid}/{$link[0].title|lower|regex_replace:"/[^a-z0-9]+/":"-"}/">
[img]{$tmburl}/1_{$link[0].vid}.jpg[/img]</a>
<div style="font-weight: bold; font-size: 10px; padding-top: 3px">
&lt; PREV
</div>
{/if}
{/if}
</td>

<td align="center" style="padding-top:10px;">
{insert name=adv_status assign=status adv_name='video_right_single'}
{if $status eq "Active"}
{insert name=advertise adv_name='video_right_single'}
{else}
{if $link[1].vid ne ""}
[img]{$tmburl}/1_{$link[1].vid}.jpg[/img]<div style="font-weight: bold; font-size: 10px; padding-top: 3px">NOW PLAYING</div>
{/if}
{/if}
</td>

<td align="center" style="padding-left:8px;">
{if $rowcount eq "$rowmaxcount"}
[img]{$baseurl}/templates/images/no_next.gif[/img]
NEXT &gt;
{else}
{if $link[2].vid ne ""}
[img]{$tmburl}/1_{$link[2].vid}.jpg[/img]
<div style="font-weight: bold; font-size: 10px; padding-top: 3px">
NEXT &gt;
</div>
{/if}
{/if}
</td>

---

You might want to post this in the installation support...

HI

For next and previous to work the videos must have the at lease some of the same tags. Do yours?