javascript:(function() {
    var searchEngines = [
        { url: 'https://duckduckgo.com/?q=', param: 'q' },
        { url: 'https://www.google.de/search?q=', param: 'q' },
        { url: 'https://www.bing.com/search?q=', param: 'q' },
        { url: 'https://search.yahoo.com/search?p=', param: 'p' },
        { url: 'https://www.ecosia.org/search?q=', param: 'q' },
        { url: 'https://www.qwant.com/?q=', param: 'q' },
        { url: 'https://www.startpage.com/do/dsearch?query=', param: 'query' },
        { url: 'https://metager.de/meta/meta.ger3?eingabe=', param: 'eingabe' },
        { url: 'https://yandex.com/search/?text=', param: 'text' }
    ];

    var currentEngine = searchEngines.find(engine => window.location.href.startsWith(engine.url));

    if (currentEngine) {
        var searchParams = new URLSearchParams(window.location.search);
        var q = searchParams.get(currentEngine.param);

        if (q !== null) {
            var currentIndex = searchEngines.indexOf(currentEngine);
            var nextIndex = (currentIndex + 1) % searchEngines.length;
            var newUrl = searchEngines[nextIndex].url + encodeURIComponent(q);
            window.open(newUrl, '_blank');
        } else {
            alert('Kein "' + currentEngine.param + '" Parameter in der aktuellen URL gefunden.');
        }
    } else {
        alert('Die aktuelle Seite ist keine bekannte Suchmaschine.');
    }
})();