Pull request #3486: BI-124559 fix: 升级BI6版本后，老版本火狐浏览器无法打开仪表板

Merge in VISUAL/fineui from ~DAILER/fineui:master to master

* commit 'a5f50bedaf566956e54e04d9cad219917b00b6b8':
  BI-124559 fix: 升级BI6版本后，老版本火狐浏览器无法打开仪表板

src/core/platform/web/dom.js

@@ -108,12 +108,13 @@
         },
 
         // 获取滚动条的宽度，页面display: none时候获取到的为0
-        getScrollWidth: function () {
+        getScrollWidth: function (css) {
             if (BI.isNull(this._scrollWidth) || this._scrollWidth === 0) {
                 var ul = BI.Widget._renderEngine.createElement("<div>").width(50).height(50).css({
                     position: "absolute",
                     top: "-9999px",
-                    overflow: "scroll"
+                    overflow: "scroll",
+                    ...css
                 }).appendTo("body");
                 this._scrollWidth = ul[0].offsetWidth - ul[0].clientWidth;
                 ul.destroy();