o Releasing left, right or middle mouse button closes the popupmenu ( and selects the currently highlighted upgrade ) git-svn-id: https://unknownworlds.svn.cloudforge.com/ns1@268 67975925-1194-0748-b3d5-c16f83f1a3a1
o releasing mouse2 closes the popup menu ( bug 983 ) git-svn-id: https://unknownworlds.svn.cloudforge.com/ns1@112 67975925-1194-0748-b3d5-c16f83f1a3a1
git-svn-id: https://unknownworlds.svn.cloudforge.com/ns1@21 67975925-1194-0748-b3d5-c16f83f1a3a1
git-svn-id: https://unknownworlds.svn.cloudforge.com/ns1@1 67975925-1194-0748-b3d5-c16f83f1a3a1