_getHtmlBridge = function(flashBridge) {
    var htmlBridge = flashBridge && flashBridge.parentNode;
    while (htmlBridge && htmlBridge.nodeName === "OBJECT" && htmlBridge.parentNode) {
      htmlBridge = htmlBridge.parentNode;
    }
    return htmlBridge || null;
  }
Get the HTML element container that wraps the Flash bridge object/element.
@private