move version checking code into its own folder and file

index.php

@@ -27,6 +27,7 @@
 <script src="js/moment-with-locales.min.js"></script>
 <script src="js/config.js"></script>
 <script src="js/rrule.js"></script>
+<script src="js/version/version.js" type="text/javascript"></script>
 <script src="js/compliments/compliments.js" type="text/javascript"></script>
 <script src="js/weather/weather.js" type="text/javascript"></script>
 <script src="js/time/time.js" type="text/javascript"></script>

js/main.js

@@ -45,21 +45,7 @@ jQuery(document).ready(function($) {
 	// 	}
 	// });
 
-
+	version.init();
-	(function checkVersion()
-	{
-		$.getJSON('githash.php', {}, function(json, textStatus) {
-			if (json) {
-				if (json.gitHash != gitHash) {
-					window.location.reload();
-					window.location.href=window.location.href;
-				}
-			}
-		});
-		setTimeout(function() {
-			checkVersion();
-		}, 3000);
-	})();
 
 	time.init();
 

js/version/version.js

@@ -0,0 +1,31 @@
+var version = {
+	updateInterval: 3000,
+	intervalId: null
+}
+
+version.checkVersion = function () {
+
+	$.ajax({
+		type: 'GET',
+		url: 'githash.php',
+		success: function (data) {
+			// The githash variable is located in index.php
+			if (data && data.gitHash !== gitHash) {
+				window.location.reload();
+				window.location.href = window.location.href;
+			}
+		},
+		error: function () {
+
+		}
+	});
+
+}
+
+version.init = function () {
+
+	this.intervalId = setInterval(function () {
+		this.checkVersion();
+	}.bind(this), this.updateInterval);
+
+}