Cart issues + more - need help!

Hi,

I've got my site nearly finished so I uploaded it - - and now the 'add to cart' doesnt work (it works offline but not live). You can add a product to the cart but when you add another product it overwrites the previous one. I know its a straightforward fix but I'm not good at php or javascript.

Second issue is that I have different background/font colours for 2 of the three product categories. This works to a certain extent e.g. but when you click on a related product the background reverts to the default - this is because the URL is missing out the parent category, I guess. I also have the same problem if you click one of these products from the cart.

These are the main issues. I have a few more that would be good to sort but they're not imperative at this stage

If someone can do it free, great, if not please let me know how much it'll cost and how long it will take to fix.

If you still need help with this, please email me back at abutani79@gmail.com to discuss further

Thanks,
Ashish