I normally browse through a direct connection to the Internet, but sometimes I need to access paywalled resources, for which I use a SOCKS proxy to my university. Turning the proxy on and off is rather tedious (i.e., first navigate to Edit->Preferences->Advanced->Proxies, then select either "Direct connection to the Internet" or "Manual proxy configuration" and press "Close"). Is there some way of toggling the proxy using a toolbar button or keyboard shortcut?
I found a few add-ons but from their descriptions it's not clear to me that they do what I need. Proxy Privacy Ruler seems to enable proxies in private windows only, not on demand. Toggle Proxy claims to add a button that can "toggle between two proxies" (which is not what I want, unless "no proxy" counts as a proxy), and moreover doesn't seem to be available for SeaMonkey. Proxy Tool is sufficiently complex that it might be configurable to toggle a single proxy, but it too is not available for SeaMonkey.