Works for me, thanks. I noticed this too but I guess it wasn't as big of deal for me since I have a pretty fast internet connection so it didn't bother me as much.
Code:
{if $main eq "product"}
<link rel="stylesheet" href="{$SkinDir}/tabber.css" TYPE="text/css" MEDIA="screen" />
<script type="text/javascript" src="{$SkinDir}/tabber-minimized.js"></script>
{literal}
<script type="text/javascript">
document.write('<style type="text/css">.tabber{display:none;}<\/style>');
</script>
{/literal}
{/if}