Change image on mouseover/click

[high2K]

I'm looking for the following effect:

http://www.craghoppers.com/Craghoppe...ens/CHS234.htm. Click colour swatches to see what I mean.

This can either be the garment colour changing on mouseover or on click. Can this be achieved with Swap Images via Mouseover or Image Handler [or something else]? - I want it to function from the product detail page and not from product listing.

[high2K]

Any ideas on the best way to achieve this?