camme/webdriverjs — pull request #125 by ysono (2013-12-17 17:16:49+00:00)
Title: supporting protocol /session/:sessionId/click

With this, you can right click (or middle click?!). I wasn't sure whether this protocol was omitted on purpose because allowing right click is considered bad, but on my project, and I believe many others, right click is integral to the user experience.