Sydney based web developer, with superior expertise with wordpress plugin development, as well as the css, jQuery for front-end responsive, cross browser design. I can help alter the compare function, sorting and the responsive layouts. The only item I am not sure at this point is about Blackberry Q10 as I don't have specific blackberry phone in hand, but I'll look into the code, hopefully could figure out what caused the problem that you see. Please PM me if you'd like to proceed the business. Cheers.