diff --git a/src/javascript/global.js b/src/javascript/global.js
index 5cddc2d..e4ec11c 100644
--- a/src/javascript/global.js
+++ b/src/javascript/global.js
@@ -7,6 +7,7 @@
 */
 var global = {
 	urls: {
+		base: 'https://web.archive.org',
 		save: 'https://web.archive.org/save/',
 		calendar: 'https://web.archive.org/web/*/',
 		api: 'https://archive.org/wayback/available?url='