diff --git a/lib/settingContainers.js b/lib/settingContainers.js
index 0559494..df3875c 100644
--- a/lib/settingContainers.js
+++ b/lib/settingContainers.js
@@ -3,7 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 (function(){
 	"use strict";
-
+	
 	var scope;
 	if ((typeof exports) !== "undefined"){
 		scope = exports;
@@ -135,4 +135,78 @@
 			});
 		}
 	};
+	
+	scope.initializeUrlContainer = function(eventHandler){
+		if (scope.urlContainer){
+			scope.urlContainer.on(function({newValue, oldValue}){
+				newValue.forEach(function(urlSetting){
+					var regExp;
+					var domain = !!urlSetting.url.match(/^[A-Za-z0-9_.-]+$/);
+					if (domain){
+						regExp = new RegExp(
+							"(?:^|\\.)" + urlSetting.url.replace(/([\\+*?[^\]$(){}=!|.])/g, "\\$1") + "\\.?$",
+							"i"
+						);
+					}
+					else {
+						regExp = new RegExp(urlSetting.url, "i");
+					}
+					const match = function(url){
+						if (!url){
+							return false;
+						}
+						else if (
+							url instanceof String ||
+							(typeof url) === "string"
+						){
+							return url === urlSetting.url;
+						}
+						else if (domain){
+							return (url.hostname || "").match(regExp);
+						}
+						else {
+							return url.href.match(regExp);
+						}
+					};
+					Object.defineProperty(
+						urlSetting,
+						"match",
+						{
+							enumerable: false,
+							writable: true,
+							configurable: true,
+							value: match
+						}
+					);
+				});
+				
+				var newUrls = newValue.map(function(entry){return entry.url;});
+				var oldUrls = oldValue.map(function(entry){return entry.url;});
+				var matching = {};
+				newUrls.forEach(function(url, i){
+					matching[url] = {new: i, old: oldUrls.indexOf(url)};
+				});
+				oldUrls.forEach(function(url, i){
+					if (!matching[url]){
+						matching[url] = {new: -1, old: i};
+					}
+				});
+				Object.keys(matching).forEach(function(url){
+					var oldEntry = oldValue[matching[url].old] || {};
+					var newEntry = newValue[matching[url].new] || {};
+					scope.urlContainer.entries.forEach(function(settingDefinition){
+						var name = settingDefinition.name;
+						var oldValue = oldEntry[name];
+						var newValue = newEntry[name];
+						
+						if (oldValue !== newValue){
+							((eventHandler[name] || {})[url] || []).forEach(function(callback){
+								callback({name, newValue, oldValue, url});
+							});
+						}
+					});
+				});
+			});
+		}
+	};
 }());
\ No newline at end of file
diff --git a/lib/settings.js b/lib/settings.js
index f1c6d93..871a1a3 100644
--- a/lib/settings.js
+++ b/lib/settings.js
@@ -374,79 +374,8 @@
 		}
 	});
 	
-	if (settingContainers.urlContainer){
-		settingContainers.urlContainer.on(function({newValue, oldValue}){
-			newValue.forEach(function(urlSetting){
-				var regExp;
-				var domain = !!urlSetting.url.match(/^[A-Za-z0-9_.-]+$/);
-				if (domain){
-					regExp = new RegExp(
-						"(?:^|\\.)" + urlSetting.url.replace(/([\\+*?[^\]$(){}=!|.])/g, "\\$1") + "\\.?$",
-						"i"
-					);
-				}
-				else {
-					regExp = new RegExp(urlSetting.url, "i");
-				}
-				const match = function(url){
-					if (!url){
-						return false;
-					}
-					else if (
-						url instanceof String ||
-						(typeof url) === "string"
-					){
-						return url === urlSetting.url;
-					}
-					else if (domain){
-						return (url.hostname || "").match(regExp);
-					}
-					else {
-						return url.href.match(regExp);
-					}
-				};
-				Object.defineProperty(
-					urlSetting,
-					"match",
-					{
-						enumerable: false,
-						writable: true,
-						configurable: true,
-						value: match
-					}
-				);
-			});
-
-			var newUrls = newValue.map(function(entry){return entry.url;});
-			var oldUrls = oldValue.map(function(entry){return entry.url;});
-			var matching = {};
-			newUrls.forEach(function(url, i){
-				matching[url] = {new: i, old: oldUrls.indexOf(url)};
-			});
-			oldUrls.forEach(function(url, i){
-				if (!matching[url]){
-					matching[url] = {new: -1, old: i};
-				}
-			});
-			Object.keys(matching).forEach(function(url){
-				var oldEntry = oldValue[matching[url].old] || {};
-				var newEntry = newValue[matching[url].new] || {};
-				settingContainers.urlContainer.entries.forEach(function(settingDefinition){
-					var name = settingDefinition.name;
-					var oldValue = oldEntry[name];
-					var newValue = newEntry[name];
-
-					if (oldValue !== newValue){
-						((eventHandler[name] || {})[url] || []).forEach(function(callback){
-							callback({name, newValue, oldValue, url});
-						});
-					}
-				});
-			});
-		});
-	}
+	settingContainers.initializeUrlContainer(eventHandler);
 	
-
 	logging.verbose("loading settings");
 	let initialized = false;
 	scope.isInitialized = function(){