Sync session storage between tabs

src/vidyano.html

@@ -1,4 +1,28 @@
 <script> Polymer = { lazyRegister: "max", useNativeCSSProperties: true, suppressTemplateNotifications: true, suppressBindingNotifications: true }; </script>
+<script>
+var sessionStorage_transfer = function (event) {
+    if (!event) event = window.event;
+    if (!event.newValue) return;
+    if (event.key == "vi-getSessionStorage") {
+        localStorage.setItem("vi-sessionStorage", JSON.stringify(sessionStorage));
+        localStorage.removeItem("vi-sessionStorage");
+    } else if (event.key == "vi-sessionStorage" && !sessionStorage.length) {
+        var data = JSON.parse(event.newValue);
+        for (var key in data)
+            sessionStorage.setItem(key, data[key]);
+    }
+};
+
+if (window.addEventListener)
+    window.addEventListener("storage", sessionStorage_transfer, false);
+else
+    window.attachEvent("onstorage", sessionStorage_transfer);
+
+if (!sessionStorage.length) {
+    localStorage.setItem("vi-getSessionStorage", "-");
+    localStorage.removeItem("vi-getSessionStorage");
+};
+</script>
 <link rel="import" href="Libs/polymer/polymer.html" />
 <link rel="import" href="Libs/layout/layout.html" />
 <link rel="import" href="vidyano-lite.html" />