window.addEvent('domready', function() {
    var trigger = $( 'simplelist-select' );
    var blocks = $$( '.simplelists-item' );

    //var fx = new Fx.Elements(triggers, {wait: false, duration: 300});
    trigger.addEvent('change', function(event) {
        window.status = 'test: ' + trigger.value ;
        blocks.each(function(block, j) {
            block.setStyle( 'display', 'none' );
            block.setStyle( 'visibility', 'hidden' );
        });
        thisblock = 'simplelist' + trigger.value ;
        $(thisblock).setStyle( 'display', 'block' );
        $(thisblock).setStyle( 'visibility', 'visible' );
    });
});