Thanks again ls-universe.

Hmm, I've edited the right borders size so that now the distance at which the subfolders overlap is identical, however the xpopupOverlapX function does nothing,while xpopupOverlapY still functions perfectly - could this be something to do with the columns?

I'm using xPopup 1.3.1


Also, (slap me if I'm asking too many questions :) ) using different settings for subfolders:

xpopupCustomSubFolder subpopup - this should make subfolders use the subpopup's settings instead? It doesn't for me - I'm sure I made a mistake somewhere... Also, setting it as *Popup "Drives" Folder subpopup simply breaks the folder - not using supopups settings.

I'm sure this is me just not understanding the docs properly, as usual any help is much appreciated!