[Userscript] Quick Account Flipper

Description  
This is a very simple psuedo-account-switcher for people who use multiple accounts to browse Derpibooru (such as having separate accounts for SFW and NSFW activities, or having a second account for roleplaying).
 
This script takes advantage of the fact that Derpibooru has multiple domains, each of which each allows a separate account to be logged in. This script adds buttons to the “user bar” in the top-right corner of every page, that when clicked will take you to the same page on another one of the site’s domains. If you are logged into another account on another domain, this essentially switches the account you are using without you having to manually change the URL or navigate back to the page you were visiting.
 

 
Changelog  
V1.4 - 2016/09/08 - Match the new version of the site
 
V1.3 - 2016/03/24 - The “Triple Domain Edition” by DanielTepesKraus. Allows fast switching between all three of Derpibooru’s domains, moves the switching buttons back to the primary menu, this time without breaking anything (Thanks Kraus!)
 
V1.2 - 2016/03/22 - “Switch” link is now in the user drop-down menu, because it doesn’t break anything when located there.
 
V1.1 - 2016/03/01 - Moved button because it was somehow breaking the user menu in it’s original location.
 
V1.0 - 2016/03/01 - Initial release
 
Download Link  
V1.4 Download
 
Note: previous versions of the script do not work with the updated layout.  
V1.3 (Three domains, in main user bar) - Download  
V1.2 (Two domains, in user dropdown menu) - Download
 
Disclaimer Stuffs  
Use at your own risk. This script does not store or access any user data. Using multiple accounts for the purpose of shitposting/sockpuppeting is not cool, so don’t do it.

>Making shitposting/dupe voting easier.
 
Nice script tho.

@SocDev
 
To be entirely honest, I only wrote this because I generally browse the site under my other account (since that’s the one I’m logged into .org with), and got tired of manually editing the URL every time I wanted to comment/fave something =P
 
And thanks :)

And updated it already because somehow it was messing with the user drop-down menu. Oops.

Bumping because V1.3 now. This edition is entirely Kraus’s doing, and now adds support for all three site domains (derpibooru.org, derpiboo.ru, trixiebooru.org), and actually allows the buttons to be in the primary user bar without breaking other stuff.

Update: The V1.3 of the script has broken due to the recent site update; if you’re using it, I recommend you to update to the newest version (see the first post).

For anyone wanting to do something similar without a script and without changing domains, most browsers’ privacy mode can be used with most sites to login on a separate account. Just open/start a new private session, then login like usual. As long as you keep that windows/tab open, you can use a separate account at the same time. If you close the window/tab, it’ll flush the cookies and you’ll be logged out.

@Vinyl Fluff  
That’s effective for anyone who doesn’t mind logging into their account every time they wanna use the site.
 
But for the rest of us who’d rather just stay logged in, that’s an even bigger pain in the ass.

Yeah it’s definitely not a solution for extended, long-term use, just a simple workaround for infrequent use requiring nothing else but the browser itself.
 
That being said, I believe at least Firefox allows you the option to retain cookies if you wish under a private tab.