diff --git a/public/assets/js/fast.js b/public/assets/js/fast.js
index 06d7667b0ef9e73fdc185540171c97a68fbd552a..df820d77360f7f6410982407a0b118de946d23bd 100644
--- a/public/assets/js/fast.js
+++ b/public/assets/js/fast.js
@@ -187,7 +187,8 @@ define(['jquery', 'bootstrap', 'toastr', 'layer', 'lang'], function ($, undefine
                     }
                 }, options ? options : {});
                 if ($(window).width() < 480 || (/iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream && top.$(".tab-pane.active").size() > 0)) {
-                    options.area = [top.$(".tab-pane.active").width() + "px", top.$(".tab-pane.active").height() + "px"];
+                    options.area[0] = top.$(".tab-pane.active").width() ? top.$(".tab-pane.active").width() + 'px' : options.area[0]
+                    options.area[1] = top.$(".tab-pane.active").height() ? top.$(".tab-pane.active").height() + 'px' : options.area[1]
                     options.offset = [top.$(".tab-pane.active").scrollTop() + "px", "0px"];
                 }
                 return Layer.open(options);