Changes background image to a black one in War-facts Starmap Javascript V2
// ==UserScript==
// @name BlackStarmapBackground
// @namespace by guardian
// @description Changes background image to a black one in War-facts Starmap Javascript V2
// @include *.war-facts.com/extras/view_universe.php*
// @version 1
// @grant none
// ==/UserScript==
(function() {
var mydiv = document.getElementById("starMapContainer");
mydiv.style.backgroundImage = "none";
document.body.style.backgroundColor="#000000";
})();