Navigation Tree to Auto Collapse When Another Root Node is Expended

Hi all,

I am very new to portal development and customization and would like to ask how can we achieve to auto collapse a root node when another root node is expended so that only one node will be opened each time. Something like below.

Is this achievable? I was looking into the LightDetailedNavigationTree.jsp file but I was not successful in changing it for this to work.

Any advice are greatly appreciated.

Thank you.

Regards,

Amanda