accordian control

Question

I am new to the ajax controls. iam using accordian control& collapsible panel in my website .in accordian control in accordian pane contains on button ,in code behind page the button event not firing (button click event in accordian pane not firing). iam check syntax of the control is correct why this will not firing.
i am using code in other application is working but that is in visual studio 2008.
thanks in advance.please  tell me quick.