Load swf advice


I’m looking for some advice on the best way to load movies. I’ve built this site here

[www.paulseville.co.uk ](http://www.paulseville.co.uk)and it works okay but sometimes has some issues. Namely if you select to look at one of the collections and then click on one of the categories in that collection before the content loads then it starts to flash between sections. 

Also if you don't wait for the content to load in one section and then click another section in the primary nav it also gets confused.

What's the best way to sort out this problem? Would another way of loading the content be a better option?

Thanks for your help