$('.main-to-form').on('dropdown', '.bootstrap-select.scode-select li.dropdown-header', function(e) {
            e.preventDefault();
            e.stopPropagation();
            var $select = $(this).closest(".bootstrap-select.scode-select");
            var optgroup = $(this).data('optgroup');
            if ($(this).hasClass('item-opened')) {
                $(this).removeClass('item-opened');
                $select.find("li[data-optgroup='" + optgroup + "']").not(this).slideUp();
            } else {
                $select.find("li.dropdown-header").not(this).removeClass('item-opened');
                $(this).addClass('item-opened');
                $select.find("li").not(".divider, .dropdown-header, :first-child").slideUp();
                $select.find("li[data-optgroup='" + optgroup + "']").slideDown();
            }
        });