improve thumbnails creation performances in code

www/code/inner.js

@@ -357,7 +357,7 @@ define([
                     getContainer: getThumbnailContainer,
                     filter: function (el, before) {
                         if (before) {
-                            $(el).parents().css('overflow', 'visible');
+                            //$(el).parents().css('overflow', 'visible');
                             $(el).css('max-height', Math.max(600, $(el).width()) + 'px');
                             return;
                         }

www/common/common-thumbnail.js

@@ -183,8 +183,10 @@ define([
                 allowTaint: true,
                 onrendered: function (canvas) {
                     if (opts.filter) { opts.filter(element, false); }
+                    setTimeout(function () {
                         var D = getResizedDimensions(canvas, 'pad');
                         Thumb.fromCanvas(canvas, D, cb);
+                    }, 10);
                 }
             });
         };