docs: function () {
                  if (__scrollBarsWidth != null) {
                      return __scrollBarsWidth;
                  }
                  var document = Aria.$window.document;
                  var o = document.createElement("div"); // outer div
                  var i = document.createElement("div"); // inner div
                  o.style.overflow = "";
                  o.style.position = "absolute";
                  o.style.left = "-10000px";
                  o.style.top = "-10000px";
                  o.style.width = "500px";
                  o.style.height = "500px";
                  // Old solution with width 100% seems to behave correctly
                  // for all browsers except IE7. Some research gives that
                  // just for IE7 this method does not work when setting width 100%,
                  // but works correctly setting no width
                  if (!ariaCoreBrowser.isIE7) {
                      i.style.width = "100%";
                  }
                  i.style.height = "100%";
                  document.body.appendChild(o);
                  o.appendChild(i);
                  __scrollBarsWidth = i.offsetWidth;
                  o.style.overflow = "scroll";
                  __scrollBarsWidth -= i.offsetWidth;
                  document.body.removeChild(o);
                  return __scrollBarsWidth;
              }