Thank you Ken
I have also been thinking about adding a chained select widget to the DHTML Suite. I will look at your code and use it or create a new widget. I'm not sure how easy it is to create more than two chained select boxes with my exisiting script. To have unlimited number of chained selects would be a nice feature I think.
I will get on it as soon as I'm back in action. I have been "ordered" to take it easy for a couple of days, so I will probably not be back 100% until late next week.