Problems with avatar if conditional

[DataHero]

I'm currently working on overhauling the entire showgroups template, but it seems I've come across one small issue that I'd like to fix before releasing my first 'mod'. Apparently, I've added an if conditional for showing the avatar. As such, I want it so that if a user has an avatar, it'll be displayed. Otherwise, it won't. In my case, however, neither will appear.

If I take away the if conditional, the avatar does appear, but then an annoying 2px by 2px image file appears for those who don't have an avatar. Here's the code I'm using for the avatar bit:

<if condition="$show['avatar']">
        <a href="member.php?$session[sessionurl]u=$userinfo[userid]"><img class="thumbnailAvatar" alt="<phrase 1="$post[username]">$vbphrase[xs_avatar]</phrase>" style="<if condition="$userinfo['avwidthpx'] > 60"> max-width:60px !important; width:auto; height:auto;<else />display:inline;</if>" /></a>
</if>

Any help would be greatly appreciated.