Script Summary: Focuses the username textbox on steamcommunity.com's login pages as soon as the page is ready, instead of waiting for the entire page to load completely
A personal annoyance of mine is when trying to log onto Steam sites I need to manually click on the username textbox before I can type my username, and then while I'm halfway through typing my password the site suddenly moves keyboard focus back to the username field, so I keep having to type everything all over again.
This script fixes that problem by moving keyboard focus to the username textbox as soon as the page is ready, instead of waiting for everything on the page to finish loading first before changing focus.
For now, I decided to have this script affect only the steamcommunity.com login page and the steamcommunity.com OpenID login page. It does not apply to store.steampowered.com