Sandbox Issue Fixed

views/cesium.tpl

@@ -50,9 +50,10 @@
       homeButton: false,
       timeline: false,
     });
-    console.log(Cesium.InfoBox.container);
-    var iframe = document.getElementsByClassName('cesium-infoBox-iframe')[0];
-    iframe.sandbox.add('allow-popups-to-escape-sandbox');
+
+    viewer.infoBox.frame.setAttribute("sandbox", "allow-same-origin allow-popups allow-popups-to-escape-sandbox");
+    viewer.infoBox.frame.src = "about:blank";
+
     var clock = new Cesium.Clock({
        clockStep : Cesium.ClockStep.SYSTEM_CLOCK_MULTIPLIER
     });