DRPS arrows is an unofficial tool to help you navigate the DRPS website more quickly. You can quickly change session, and course codes in course descriptions become links.
The DRPS banner with this extension:
Clicking the arrows moves the current page between sessions. The year is coloured in green if it’s a future session, red if it’s an old session. Clicking on a coloured year takes you to the current session. The current session is rolled over in June.
Keyboard shortcuts: Ctrl+left previous; Ctrl+right next; Ctrl+up current. Keyboard shortcuts work on error pages too, when a course doesn't exist in some session.
Course codes in the free text sections become links. The screenshot also shows a navigation menu available from the Firefox location bar. In Chrome the button is on the main toolbar and is visible (grayed out) on all sites (a feature/limitation of Chrome). You can hide the button if you don't like it. With the user-script you don’t get a toolbar button at all.
Compatibility: Although in principle the userscript could work in many browsers, by using TamperMonkey, I have only tested with Firefox and Chrome (really Chromium). It is likely that it won’t work in other browsers.
No warranty: This tool was made in my spare time and comes with no guarantees. Use it at your own risk! Feel free to tell me about any problems, but please understand that I might not have time to fix them.