Nice integration with Joomla. Couple of things I noticed.
Your js/css isn't GZIPPED compressed which cuts loading time by 60+% and is supported by all major browsers.
You can compress your CSS/JS using CssJsCompress
(RokGZipper, doesn't compress as much but is better to use if you run into css conflicts IME)
You can view your file sizes quickly for each image and js/css and see the compressed states of your js/css using FireFox
along with Firebug
Your two images on the home page are huge gif and png files. 75% compressed jpg files should be used in place of them.
I've saved them as jpg if you want to use them.
All your other images are large PNG files. For photos you should always use jpg. Great looking product photos also
I'd turn on SEF URL'S
, great job of creating separate pages for each category.
The left side menu's "Home" button links you to the wrong address duplicating the main URL.
Surprised you didn't get more crazy with the logo.
Your admin page is open to public. You can use jSecure
to close it to potential hackers.
Some of my other favorite extensions
If you have any questions let me know.