fix #2521 @1

diff --git a/js/libs/fluidbook/fluidbook.3dflip.js b/js/libs/fluidbook/fluidbook.3dflip.js
index 07a9c9f958435c2dd38a2a4e8915539e155c0263..882d52a24eed2089e5ae88e20707260c53d61d0a 100644 (file)
--- a/js/libs/fluidbook/fluidbook.3dflip.js
+++ b/js/libs/fluidbook/fluidbook.3dflip.js
@@ -496,9 +496,9 @@ Fluidbook3DFlip.prototype = {
             if (res < 10) {
                 newMode = 'disable';
             } else if (res < 30) {
-                if(this.support.edge){
-                    newMode='disable';
-                }else {
+                if (this.fluidbook.support.edge) {
+                    newMode = 'disable';
+                } else {
                     newMode = 'veryLowPerf';
                 }
             } else {