How do i ad <span></span> to the menu code?

[ANSH7662]

how to add span tag in the theme_function.php

Code:

function get_navigation($currentpage) {

    $menu = '';

    $path = GSDATAPAGESPATH;
    $dir_handle = opendir($path) or die("Unable to open $path");
    $filenames = array();
    while ($filename = readdir($dir_handle)) {
        $filenames[] = $filename;
    }
    
    $count="0";
    $pagesArray = array();
    if (count($filenames) != 0) {
        foreach ($filenames as $file) {
            if ($file == "." || $file == ".." || is_dir($path . $file) || $file == ".htaccess"  ) {
                // not a page data file
            } else {
                $data = getXML($path . $file);
                if ($data->private != 'Y') {
                    $pagesArray[$count]['menuStatus'] = $data->menuStatus;
                    $pagesArray[$count]['menuOrder'] = $data->menuOrder;
                    $pagesArray[$count]['menu'] = strip_decode($data->menu);
                    $pagesArray[$count]['url'] = $data->url;
                    $pagesArray[$count]['title'] = strip_decode($data->title);
                    $pagesArray[$count]['parent'] = $data->parent;
                    $count++;
                }
            }
        }
    }
    
    $pagesSorted = subval_sort($pagesArray,'menuOrder');
    if (count($pagesSorted) != 0) {
        foreach ($pagesSorted as $page) {
            $sel = ''; $classes = '';
            $url_nav = $page['url'];
            
            if ($page['menuStatus'] == 'Y') {
                if ("$currentpage" == "$url_nav") { $classes = "current ". $page['parent'] ." ". $url_nav; } else { $classes = trim($page['parent'] ." ". $url_nav); }
                if ($page['menu'] == '') { $page['menu'] = $page['title']; }
                if ($page['title'] == '') { $page['title'] = $page['menu']; }
                $menu .= '<li class="'. $classes .'"><a href="'. find_url($page['url'],$page['parent']) . '" title="'. strip_quotes($page['title']) .'">'.$page['menu'].'</a></li>'."\n";
            }
        }
        
    }
    
    closedir($dir_handle);
    echo exec_filter('menuitems',$menu);
}