Merge pull request #4 from beol/feature/javascript-namespace

Enhance scale fix script

assets/js/scale.fix.js

@@ -1,17 +1,27 @@
-var metas = document.getElementsByTagName('meta');
-var i;
-if (navigator.userAgent.match(/iPhone/i)) {
-  for (i=0; i<metas.length; i++) {
-    if (metas[i].name == "viewport") {
-      metas[i].content = "width=device-width, minimum-scale=1.0, maximum-scale=1.0";
+(function(document) {
+    var metas = document.getElementsByTagName('meta'),
+        changeViewportContent = function(content) {
+            for (var i = 0; i < metas.length; i++) {
+                if (metas[i].name == "viewport") {
+                    metas[i].content = content;
+                }
+            }
+        },
+        initialize = function() {
+            changeViewportContent("width=device-width, minimum-scale=1.0, maximum-scale=1.0");
+        },
+        gestureStart = function() {
+            changeViewportContent("width=device-width, minimum-scale=0.25, maximum-scale=1.6");
+        },
+        gestureEnd = function() {
+            initialize();
+        };
+
+
+    if (navigator.userAgent.match(/iPhone/i)) {
+        initialize();
+
+        document.addEventListener("touchstart", gestureStart, false);
+        document.addEventListener("touchend", gestureEnd, false);
     }
-  }
-  document.addEventListener("touchstart", gestureStart, false);
-}
-function gestureStart() {
-  for (i=0; i<metas.length; i++) {
-    if (metas[i].name == "viewport") {
-      metas[i].content = "width=device-width, minimum-scale=0.25, maximum-scale=1.6";
-    }
-  }
-}
+})(document);