Added zoom to UI

example/css/styles.css

@@ -278,10 +278,10 @@ footer {
 }
 
 #interactive.viewport > canvas, #interactive.viewport > video {
-    max-width: 100%;
     width: 100%;
 }
 
 canvas.drawing {
     position: absolute;
+    z-index: 2;
 }

example/live_w_locator.js

@@ -170,7 +170,7 @@ $(function() {
             frequency: 2,
             decoder: {
                 readers : [{
-                    format: "ean_reader",
+                    format: "code_128_reader",
                     config: {}
                 }]
             },