public partial class BrowserForm : Form
    {
        #region Fields

        private bool responsed;

        #endregion

        #region Constructors

        public BrowserForm()
        {
            InitializeComponent();

            Application.Idle += new EventHandler(Application_Idle);
            this.webBrowser.DocumentTitleChanged += new EventHandler(webBrowser_DocumentTitleChanged);

            SHDocVw.WebBrowser_V1 browser = (SHDocVw.WebBrowser_V1)this.webBrowser.ActiveXInstance;
            browser.NewWindow += new SHDocVw.DWebBrowserEvents_NewWindowEventHandler(OnBrowserNewWindow);
        }

        #endregion

        #region Functions

        private void Application_Idle(object sender, EventArgs e)
        {
            this.pictureBoxBack.Enabled = this.webBrowser.CanGoBack;
            this.pictureBoxForward.Enabled = this.webBrowser.CanGoForward;
        }

        private void pictureBox_MouseEnter(object sender, EventArgs e)
        {
            PictureBox pictureBox = sender as PictureBox;
            if (pictureBox.Enabled)
            {
                pictureBox.BackColor = Color.FromArgb(222, 222, 222);
            }
        }

        private void pictureBox_MouseDown(object sender, MouseEventArgs e)
        {
            PictureBox pictureBox = sender as PictureBox;
            if (pictureBox.Enabled)
            {
                pictureBox.BackColor = Color.FromArgb(192, 192, 192);
            }
        }

        private void pictureBox_MouseLeave(object sender, EventArgs e)
        {
            PictureBox pictureBox = sender as PictureBox;
            pictureBox.BackColor = SystemColors.Control;
        }

        private void pictureBoxBack_Click(object sender, EventArgs e)
        {
            this.webBrowser.GoBack();
        }

        private void pictureBoxForward_Click(object sender, EventArgs e)
        {
            this.webBrowser.GoForward();
        }

        private void textBoxAddress_KeyDown(object sender, KeyEventArgs e)
        {
            Keys keys = e.KeyCode;
            if (keys == Keys.Enter)
            {
                CommandGo();
            }
        }

        private void pictureBoxGo_Click(object sender, EventArgs e)
        {
            CommandGo();
        }

        private void webBrowser_DocumentTitleChanged(object sender, EventArgs e)
        {
            string title = this.webBrowser.DocumentTitle;
            if (string.IsNullOrEmpty(title))
            {
                this.Text = "浏览器";
            }
            else
            {
                this.Text = string.Format("{0} - 浏览器", title);
            }
        }

        private void webBrowser_Navigated(object sender, WebBrowserNavigatedEventArgs e)
        {
            Uri url = e.Url;
            if (url.Scheme == Uri.UriSchemeHttp)
            {
                this.textBoxAddress.Text = url.AbsoluteUri;
            }
        }

        private void OnBrowserNewWindow(string URL, int Flags, string TargetFrameName, ref object PostData, string Headers, ref bool Processed)
        {
            Processed = true;

            this.webBrowser.Navig