var fadein;
var fadeout;

function pageLoad() {
    var ss = $find("ss1");
    if (ss != null) {
        ss.add_slideChanging(onChanging);
    }

    var ae = $find("ae");
    if (ae != null) {
        var be = ae.get_OnLoadBehavior();
        var an = be.get_animation();
        fadein = an.get_animations()[1];
        fadeout = an.get_animations()[0];

        fadein.set_duration(0.5);
        fadeout.set_duration(0.2);
    }
}

function onChanging(sender, args) {
    fadein.play();
    window.setTimeout("fadeout.play()", 5000);
}