DropDown list selection

Question

Hi 

i am having two pages in my website

one in default. asp x and other is default2.aspx

In my default.aspx page i am having one country drop down list(list items are India,USA,UK)

In my default2.aspx page i am having states drop down list(list items are Andhrapardesh,Assam,Texas, California,London)

Now if i select the  India in my country drop down of  default page,it should be redirect to default2 page and AndhraPardesh,Assam should be display in states drop down list. 

how is it possible??