My Shop corrupts on loading

www.myashtray.org/roy

The site works but when you link to the shop through either menu the shop corrupts.

Any Ideas/

This is not HikaShop wich has a problem but your whole website. For example, the contact page has the same problem.

This is caused by your SEF configuration. Please make sure that your SEF is configured correctly:
docs.joomla.org/SEF_URLs_in_Joomla!_1.5

Thank you, forgot all about SEF, thats 30 mins wasted.