Add zone switching

pyleds/templates/index.html

@@ -70,6 +70,10 @@
         function doCancel() {
             send_get('/crash');
         }
+
+        function switchRegion(region_id) {
+            send_get('/region/' + region_id);
+        }
     </script>
 </head>
 
@@ -83,6 +87,12 @@
 
             <label><input type="checkbox" id="looping" /><b> loop</b></label>
         </div>
+        <div class="row">
+            <p>Zone switch</p>
+            {% for region in regions %}
+                <button onclick="switchRegion({{ region }})">zone {{ region }}</button>
+            {% endfor %}
+        </div>
         <div class="row" id='loading' style="visibility: hidden"><b>LOADING!</b></div>
         <div class="section-rgb">
             <div class="row">