i dont think having 3 buttons is the best solution,basis on the logic and parameters method asked,
i believe this can be an accurate solution-
On the basis of parameters passed ,we can have 2 methods to access different actions via javascript-
1)getting values from user,checking them in javascript.
2)getting values from user,checking them in javascript,assigning values to hidden variables accordingly,calling servlets and using those hidden values.i have elaborated method1.
nawab has come