window.onload = function(){

    Shadowbox.init({
        // let's skip the automatic setup because we don't have any
        // properly configured link elements on the page
        //skipSetup: true
        players:  [ 'html']
    });

    // open a welcome message
    Shadowbox.open({
        player:     'html',
        title:      '',
        content:    '<img src="http://www.pulls2.de/upload/vorschaltung_twey.jpg" alt="" border="0" />',
        height:     360,
        width:      493
    });

};