}
        // Allow other relative URLs (may contain colons in path/query)
        return url;
    }

    /**
     * Get file type icon based on URL or mimetype
     */
    function getFileTypeIcon(url, mimetype) {
        if (mimetype) {
            if (mimetype.indexOf('pdf') !== -1) return 'fa-file-pdf-o';
            if (mimetype.indexOf('word') !== -1 || mimetype.indexOf('document') !== -1) return 'fa-file-word-o';