Keeps getting better! Thanks for the cool module and all the tweaks from everyone... The Radio option seems to be working now though I tried to do checkboxes too which didnt seem to work out for me.
This is all very helpful as it makes attributes much more intuitive. Im doing a site that sells art prints so they select a size attribute then it loads frame options relative to that below. Checkboxes would be nicest though radio will do for now .. I dont want to need a No option in a select box or to have all the No options display in the cart & such... almost there!