Show Certain Sizes/Styles Per Colour (attributes)

[dspeake]

Hi,

 

I have searched the forums and have been unable to find a solution to my problem.

 

I have a product info pages such as this and this. They have drop down lists for 'Colour' and 'Size/Style'.

 

Some sizes are only available in certain colours, but obviously one can currently choose any colour in any size. What I need is for when the 'Size' drop down is changed (this will appear before the others) for the 'Size/Style' box to be updated so that it only shows available colours.

 

Are there any add-ons that can do something like this?

 

Thanks in advance

 

 

Dave