demo/load-event/js/libs/bootstrap-multiselect/bootstrap-multiselect.js
function() {
            this.$ul.html('');

            // Important to distinguish between radios and checkboxes.
            this.options.multiple = this.$select.attr('multiple') === "multiple";

            this.buildSelectAll();
            this.buildDropdownOptions();
            this.buildFilter();

            this.updateButtonText();
            this.updateSelectAll();

            if (this.options.disableIfEmpty && $('option', this.$select).length <= 0) {
                this.disable();
            }
            else {
                this.enable();
            }

            if (this.options.dropRight) {
                this.$ul.addClass('pull-right');
            }
        }
function() {
            this.$ul.html('');

            // Important to distinguish between radios and checkboxes.
            this.options.multiple = this.$select.attr('multiple') === "multiple";

            this.buildSelectAll();
            this.buildDropdownOptions();
            this.buildFilter();

            this.updateButtonText();
            this.updateSelectAll();

            if (this.options.disableIfEmpty && $('option', this.$select).length <= 0) {
                this.disable();
            }
            else {
                this.enable();
            }

            if (this.options.dropRight) {
                this.$ul.addClass('pull-right');
            }
        }
function ( ) { this . $ul . html ( '' ) ; // Important to distinguish between radios and checkboxes. this . options . multiple = this . $select . attr ( 'multiple' ) === "multiple" ; this . buildSelectAll ( ) ; this . buildDropdownOptions ( ) ; this . buildFilter ( ) ; this . updateButtonText ( ) ; this . updateSelectAll ( ) ; if ( this . options . disableIfEmpty && $ ( 'option' , this . $select ) . length <= 0 ) { this . disable ( ) ; } else { this . enable ( ) ; } if ( this . options . dropRight ) { this . $ul . addClass ( 'pull-right' ) ; } }
Rebuild the plugin.

Rebuilds the dropdown, the filter and the select all option.
Rebuild the plugin .