function init() {
    createFirework(27,52,7,5,null,null,null,null,false,true); 


    setTimeout("init();", 2000 + Math.floor(Math.random()*2000));
}

function destuctor() {
    fc.controller.destructor();
    fc.controller = null;
}

addEventHandler(window,'load',init);
addEventHandler(window,'unload',destuctor);