$(function () {
    var returnsValue; // Type:  any
    // Parameters
    var position; // Type:  Object
    
    returnsValue = $(".selector").wijcalendar("popup", position);
});

function popup( 
   position : Object
) : any;

Parameters

position

A jQuery Position plugin that indicates the position in which to pop up the calendar. Please see "http://jqueryui.com/demos/position/" for details of the parameter.

Reference

wijcalendar type
wijcalendar jQuery Widget