protected void DeleteIcon_Click(object sender, ImageClickEventArgs e)
    {
        Util util = new Util();
        Hashtable State = (Hashtable)HttpRuntime.Cache[Session.SessionID];
        if (util.CheckSessionTimeout(State, Response, "../../Default.aspx")) return;

        util.DeleteLargeIcon(State, State["ApplicationID"].ToString());
        IconUploadMessage.Text = "Icon Deleted.";
        LargeIconButton.Visible = false;
        DeleteIcon.Visible = false;
    }