hello

1. when user select on country then his corresponding state list should display in next combo /select list.

2.Also in another content type i am using content taxonomy reference fields for books/Videos
in that i have created new field that is node reference i.e book name - RS Desai , The magic of maths etc.
I want that when i select books new drop down display with list of books .
and for video it will show videos list in drop down

Can any one help me.

Thanks