There are 1 previous version of this script.
// ==UserScript==
// @name Default monospace font
// @description Replaces "Courier" and "Courier New" fonts with your default monospace font on all web pages
/ @author Dave Cortright
// @namespace kpao.org
// @version 1.01
// @date 2011-07-04
// @include *
// ==/UserScript==
// Inspired by "Sans-Serif Default" from Peter Farmer
var elementList = document.getElementsByTagName('*');
for (var i = elementList.length - 1; i >= 0; i--) {
var elementItem = elementList[i];
var style = getComputedStyle(elementItem, '');
elementItem.style.fontFamily = style.fontFamily.replace('Courier New', 'monospace');
elementItem.style.fontFamily = style.fontFamily.replace('Courier', 'monospace');
}