function _init(htOptions){
            _initElement(htOptions);
            _attachEvent();

            htVar.fOnChange = htOptions.fOnChange;

            _selectDefault();
        }
@example
var oSelect = new yobi.Dropdown({
    "elContainer": ".btn-group",
    "fOnChange"  : function(){},
    "
});

@require bootstrap-dropdown.js