I think fancy category addon can work for you. You can find more info about it here. http://www.x-cart.com/fancy_categories.html.
Please put your x-cart version to your signature so that we can help you better.
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X-Cart: 4.7.7 LIVE
Skin:Ultra by xcartmods.co.uk
X-cart Modules: | ACR, Rich Google Search, Customer Testimonials | Cloud Search, | Websitecm: CDSEO (2.1.9)
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Server: Linux
php: 5.3
mysql: 5.0.89
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