find and not find filter

jqueryfilter.js

 $(".navigatorModifierSearch").live('keyup', function (event) {
            var $navigationelementsContainer = $(this).parent().parent().find(".navigationelementsContainer");
            var searchTerm = $(this).val();

            if (searchTerm.length > 0) {
                $navigationelementsContainer.find('div[data-name*="' + searchTerm.toUpperCase() + '"]').removeClass("hideNavElement");
                $navigationelementsContainer.children().not('div[data-name*="' + searchTerm.toUpperCase() + '"]').addClass("hideNavElement");                
            } else {
                //make sure all are showing
                $navigationelementsContainer.children().removeClass("hideNavElement");
            }
        });