Javascript Menu

[*MO*]

Hey dudes. i'm looking for some code on how to make a menu as such:


Item1     |     Item2     |     Item3



Then when i click Item1 it must look as follows:



Item1     |     Item2     |     Item3
Sub Item1
Sub Item2
Sub Item3


And when i click Item 2 if must look as follows:



Item1     |     Item2     |     Item3
                    Sub Item1
                    Sub Item2
                    Sub Item3




ect.
I dont wanna use graphics. only text.

Thanx people. would really appreciate help ASAP.

this is pretty important. thanx guys

*MO*