Thread:Project:Support desk/Collapsible navigation menu (not Vector skin)

Hi!

I am using mediawiki for my site and would like to make the navigation menu collapsible. I have found an extension for Vector skin (Extension:Vector) but I am using a different one (roundedblue). Is it possible to somehow customize the Vector extension for my skin? Or perhaps there is an extension for this very skin (i.e. roundedblue) or smth like a unique extension for any skin?

Any advise would be greatly appreciated!!