jQuery multipage

/**
 * jQuery multipage
 *
 * Authors: Maciej Jaros
 * Web: http://enux.pl/
 *
 * Licensed under:
 *   MIT License http://www.opensource.org/licenses/mit-license
 *
 */

(function($,undefined){

    var arrayClone = function(source)
    {
        var destination = [];
        for (var i = 0; i < source.length; i++)
        {
            destination[i] = source[i];
        }
        return destination;
    }

    //
    // Setup multipage footers (should probably go into jQury Mobile some day)
    //
    $(function()
    {
        var allPages = [];
        $('div[data-role|="page"]').each(function()
        {
            allPages.push(this.id);
        });
        $('div[data-role|="multipagefooter"]').each(function(footerIndex)
        {
            //
            // get and parse attributes
            var excludedPages = $(this).attr('data-footer-pages-exclude');
            var includedPages = $(this).attr('data-footer-pages-include');
            /*
            if (excludedPages && excludedPages.length)
            {
                excludedPages = excludedPages.split(" ");
            }
            else excludedPages = [];
            */
            if (typeof(excludedPages) != 'string')
            {
                excludedPages = '';
            }
            if (includedPages && includedPages.length)
            {
                includedPages = includedPages.split(" ");
            }
            else includedPages = [];

            //
            // get pages list for this footer
            var pages = arrayClone(includedPages.length ? includedPages : allPages);    // clone to avoid changes in allPages array
            for (var i = 0; i < pages.length; i++)
            {
                var re = new RegExp('(^| )' + pages[i] + '($| )');
                if (excludedPages.search(re) >= 0)
                {
                    pages.splice(i, 1);
                }
            }

            //
            // assure data-id is given and change data-role
            $(this).attr('data-role', 'footer');
            if (!$(this).attr('data-id'))
            {
                $(this).attr('data-id', 'multipagefooter' + footerIndex.toString());
            }

            //
            // move footer to given pages
            for (var i = 0; i < pages.length; i++)
            {
                $(this).clone().appendTo('#'+pages[i]);
            }
            $(this).remove();
        });
    });
})(jQuery);