Hi I'm new to Ajax.., i need to generate dynamic combo box in combo box1 state is available,in 2nd combo box city is available if i select state as tamilnadu in combo box1 then in combo box2 appropriate city which are in tamilnadu are want to populate. from database. for both state and city i have separate table,i need to retrieve that from database. i can't able to put my code.Please help me out.,