I think Whitcoulls site is dreadful as well. I've raised the issue with them (through their dreadful forums) and after 3 weeks got the answer that they may look at enhancements in the future.
I'm disappointed at the whole experience with Whitcoulls online. Their people in the shop were great but many people are complaining that their online presence is not up to snuff.
I've found it much easier to search and browse using the iPhone app, but not everyone has access to that.