I have a problem as following...
# I have stored some value in session to reach a Page "A"
# I have other pages "B", "C", "D".
# If I am moving from Page "A" to "B", I should not clear my session value but If I am moving from "A" to "C" or "A" to "D", then I have clear some values in session.
Note: I have menu in my left frame and content in right frame. All my links to move from "A" to "B", "C" and "D" are in menu.