hi dave west, thanks for your help so far. I have managed to get the script to run on just the products pages. although i don't think i did it right. As other javascript on that page (Ajax image swapper) is being hidden as well.

for some reason the code would only work if it was in \modules\pages\product_info\jscript_main.php

AND tpl_product_info_display.php

i put the CSS code in jscript_main.php as i didn't know where to put it in the stylesheet and it worked apart from the problem above. do you think there is a way around this or are the two scripts going to fight with each other? thanks again :)