$(document).ready(function() {
    var directoriesCheckBox = $("input[type='checkbox'][name='directory_ids[]']");
    var directoriesBannerCodeTextArea = $("textarea#directoriesBannersCode");

    function generateDirectoryBannersCode() {
        if (directoriesBannerCodeTextArea) {
            var bannersCode = "";
            directoriesCheckBox.each(function() {
                if ($(this).attr("checked")) {
                    bannersCode += $(this).prev().html() + '\n';
                }
            });
            directoriesBannerCodeTextArea.html(bannersCode);
        }
    }

    directoriesCheckBox.click(function() {
        generateDirectoryBannersCode();
    });

    if (directoriesCheckBox) {
        generateDirectoryBannersCode();
    }
});