function e ( id ) {
    return document.getElementById ( id );
}
function t (tema) {

    for (i = 0; ( ss = document.getElementsByTagName ('link')[i] ); i++ ) {

        if (  ss.getAttribute('rel').indexOf('style') != -1 ) {
            ss.disabled = true;
            if ( ss.id == 'css_' + tema ) {
                ss.disabled = false;
            }
            else {
                ss.disabled = true;
            }
        }
    }


    // Cookies!
    document.cookie = "tema="+tema+"; path=/";
}