X-Cart forums - Problem inserting Javascript slideshow

I want a slideshow on the front page of my site which contains a few category images with links to them. At first I thought this was going to be really easy. I tried and tried and couldn't get one running myself so I turned to a simple jquery slideshow. Still no good, so I figure I'll try a really really simple one like this http://www.rob-watson.co.uk/?page=38# Still nothing, no errors, just nothing happens.

I've tried having the javascript included in the <head> of the home.tpl via this

Code:

<script type="text/javascript" src="{$SkinDir}/slideshow.js"></script>

I've tried putting the code directly into home.tpl a few ways including this

Code:

<script language="JavaScript">

{literal}

<!--

//code

//-->

{/literal}

</script>

I've tried putting the <div> that calls it in home.tpl and also via the webmaster mode into the actual sql bit. Nothing works and this is driving me crazy! What am I doing wrong?