private void button2_Click(object sender, EventArgs e)
        {
            listBox1.Items.Clear();
            listBox1.Items.Add("locating IE with google web page ");
            if (_doc == null)
            {
                _doc = HookingIE.AttachToIEFromWebAddressExample();
            }
            else
            {
                listBox1.Items.Add("Document already attached, using corrent document ");
            }


            if (_doc == null)
            {
                MessageBox.Show("Unable to locate window with google chrome");
                return;
            }

            listBox1.Items.Add("IE found attaching load events");
            var windowEvts = (_doc.parentWindow as HTMLWindowEvents2_Event);

            windowEvts.onload += WindowEvtsOnOnload;

            button3.Enabled = true;

            // DOMEventHandler onmousedownhandler = new DOMEventHandler(_doc);
            //  onmousedownhandler.Handler += new DOMEvent(Mouse_Down);
        }
 private void button1_Click(object sender, EventArgs e)
 {
     listBox1.Items.Add("locating IE with google web page ");
     _doc = HookingIE.AttachToIEFromWebAddressExample();
     _doc.InjectJavascript("alert('TEST')");
     button3.Enabled = true;
 }