mala7

Hi I need some help I have two select menus, I need to make the options listed in the second menu dependent on the options selected from the first menu. for example if the first menu options were : -boys -girls and the second menu options were: -Jon -Jenifer -Tom -Jolia what i need to do is displaying only Jon and Tom if the boys option is selected from the first menu and displaying only Jenifer and Jolia if the girls option is selected from the first menu is it possible to be done by php?? or Do i have to make it by java?? Thanks