scikit-image/doc/source/_static/docversions.js

function insert_version_links() {
    var labels = ['dev', '0.4', '0.3'];

    document.write('<ul class="versions">\n');

    for (i = 0; i < labels.length; i++){
        document.write('<li>');
        if (typeof(DOCUMENTATION_OPTIONS) !== 'undefined') {
            if ((DOCUMENTATION_OPTIONS['VERSION'] == labels[i]) ||
                (DOCUMENTATION_OPTIONS['VERSION'].match(/dev$/) && (i == 0))) {
                document.write('&#9656;&nbsp;');
            }
        }
        document.write('<a href="URL">skimage VERSION</a> </li>\n'
                        .replace('VERSION', labels[i])
                        .replace('URL', 'http://scikits-image.org/docs/' + labels[i]));
    }
    document.write('</ul>\n');
}