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BlackStarmapBackground

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";
})();