working on a script for when you have too much windows ;-]
can hide each window (no matter the type... I hope *G*, tested only with status,custom,channel,query,chat,send and get) button, and show again using a button in your toolbar:
screenshot herestill in development though, I have it in my haltdef (theme) script, so it will automatically show a window if highlighted ;-]
untill now it seems to work perfectly...
(PS: no it;s not DALnet, same IRCd though, guy was too lazy to change $network ;-])