remove & add select box option if other selection changes

Question

I have 3 select boxes and all are having same value (clones) & created on change of reference table selection. now i want to manage the selection on the three Constraint d

Answer 1

Updated to an improved solution!

I hope this helps, it's a very basic demo and needs a few adjustments but should do the trick! http://jsfiddle.net/BUuZv/2/