hi mm10, thanks for your response,

this is not working

i have it written like this

protected void Page_Load(object sender, EventArgs e)
    {
        if (IsPostBack == false)
        {
            i++;
            this.PreRender += new EventHandler(Cast_PreRender);
            PlayButton.ID = i.ToString();
            this.ID = "Result" + i.ToString();


        }
        
    }

still nothing happens, it is not getting to the onclick event. any other ideas?