deselectAll: function (justVisible, triggerOnDeselectAll) {

            var justVisible = typeof justVisible === 'undefined' ? true : justVisible;
            var allLis = $("li:not(.divider):not(.disabled):not(.multiselect-group)", this.$ul);
            var visibleLis = $("li:not(.divider):not(.disabled):not(.multiselect-group):not(.multiselect-filter-hidden):not(.multiselect-collapisble-hidden)", this.$ul).filter(':visible');