Unfortunately it is not possible right now. Safari is pretty limited in some things with intentional locks. All the rest browsers should work though. I recommend Google or Firefox.
I don't know this game you mention but surely Pirates Glory is not one of the games you can finish. You can always "retire" though. For example, you can set the objectives you want to meet (how you want to be remembered for example from the rest of the playerbase, or dominate a particular game statistic) and then "retire". Of course, nothing is keeping a "retired" player from joining back again.
 "Wondrous Lands"){kind=icon}
 "Pirates Glory"){kind=icon}
 "Caravaneer 2"){kind=icon}
Unfortunately it is not possible right now. Safari is pretty limited in some things with intentional locks. All the rest browsers should work though. I recommend Google or Firefox.