Having Trouble finding an Expandable side menu script

[Rifts]

hey everyone I could really use from help.

 

I'm trying to make a simple side menu that is expandable like so

 

main1

    inside1

        inside 1.1

        inside 1.1

    inside2

          inside 1.2

          inside 1.2

    inside3

          inside 1.3

          inside 1.3

main2

    inside1

        inside 2.1

        inside 2.1

    inside2

          inside 2.2

          inside 2.2

    inside3

          inside 2.3

          inside 2.3

 

etc  anyway I have most of it working using a script I found but I cant seem to edit the script so if you click on a MAIN topic it will close the current main and expand the one clicked on.

 

There is a lot of code so let me know if you want me to post it or what

 

thanks