The w2popup object allows you to create popup dialogs with any HTML inside it. The w2popup is a jQuery plugin so it should be
called in the jQuery plugin way $().w2popup(options). If the jQuery object returns an element,
the element content will be displayed inside the popup.
A popup can be created in any of the following ways:
You can pass a map of following properties to the constructor of the popup (none of them are required):