window.Bookster object that you can use to control it from your own JavaScript.
Open the widget
Examples
Custom button
Open with context from another page element
Wait for widget to be ready
The widget fires abookster-widget-ready event on the window when it has finished loading:
The
window.Bookster object is only available after the widget script has loaded. If you need to call it immediately, use the bookster-widget-ready event to know when it’s safe.
