function init() {
        var advertisements = YAHOO.util.Dom.getElementsByClassName('advertisement', 'div');

        if (advertisements) {
            for(var i = 0; i < advertisements.length; i++) {
                var anchors = advertisements[i].getElementsByTagName('a');
                if (anchors) {
                    for (var ii = 0; ii < anchors.length; ii++) {
                        anchors[i].setAttribute('target', 'new');
                    }
                }
            }
        }
    }
    YAHOO.util.Event.onDOMReady(init);