unique id for this widget. Use this id in a div in the data-bind attribute to bind it to that widget
an item witch triggers the collapse
the value on which the target is collapsed (optional, default 0)
You may use this widget to collapse some html. To bind some divs to that widget you have to use the "data-bind" attribute in the div - tag.
In this example the div is binded to the status.collapse and will be controled by it. The additional class="hide" will hide the div at startup.