I'm not even that bothered about it not working well. One thing I will say though is I thought my head would explode because of how awful it looked.
Having too many different colours, and having background images all lead to bad design in my view.
On the homepage alone, I can count 6-7 different colours and combinations, many of which clash with others. White on Black, Black on White, Black on Grey, White on Red, Red on Black, White on Blue, Black on Blue
Websites should be as simple as possible, both to understand and to navigate. Having two different horizontal menus next to each other is bad, and do not have the same links duplicated on different parts of the page (Deals of the Week for example).
Please go back to the old site.