Little help with an if statement

[Santharian]

Hello, I setup a new skin for my site, however, the following statement doesnt seem to be working.

Can you give me the correct statement?

<if condition="$show['registerbutton']">
<a class="top" href="register.php$session[sessionurl_q]" rel="nofollow">Register</a> -
<else />
<a class="top" href="$show[nojs_link]#usercptools">User CP</a> |
<script type="text/javascript"> vbmenu_register("usercptools", 1); </script>
</if>

Thanks so much...