How to construct Dynamic Dependent Combo series in jqGrid?

I have tw开发者_JS百科o combos in my jqGrid. One has the listing of Countries and the other has the listing of states of that country. I want a system where when I change the Countries combo the corresponding value of that Country's State will construct the second combo.

Is a detailed example available?

With thanks for Oleg and to help others who are searching the same solution, the solution is as follows.

Look at the demo from this answer, or at the another demo from another answer.