This is AddExe.jsp which is included in admin.jsp when user send request as action=addExe. This jsp contains three form and each form contains comboBox. When user select a value(server) from first comboBox then the related services will b display in second comboBox and when user select services from second comboBox then related resources will be display in third comboBox. But the problem is that when I select a server from first comboBox then no problem but when I select service (means from second comboBox) then it again show "Select Server" in first comboBox. please help me in solvong this problem ,I want to display only the selected values in comboBox.