public override void ViewDidLoad()
        {
            base.ViewDidLoad();
                    _urlTextField.ShouldReturn = doReturn;
                    _browser.Delegate = new customWebViewDelegate(this);

                    var webDocumentView = new NSObject(
                        Messaging.IntPtr_objc_msgSend(_browser.Handle, (new Selector("_documentView").Handle)));
                    var webView = webDocumentView.GetNativeField("_webView");
                    Messaging.void_objc_msgSend_IntPtr(webView.Handle, (new Selector("setCustomUserAgent:")).Handle,
                        (new NSString(@"Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/532.0 (KHTML, like Gecko) Chrome/3.0.195.38 Safari/532.0")).Handle);
                     /*
                      *
                      * /* http://d.hatena.ne.jp/KishikawaKatsumi/20090217/1234818025
                      NSString *userAgent =
                            @"Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_1 like Mac OS X; ja-jp) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5F136 Safari/525.20";

                        id webDocumentView;
                        id webView;
                        webDocumentView = objc_msgSend(myWebView, @selector(_documentView));
                        object_getInstanceVariable(webDocumentView, "_webView", (void**)&webView);
                        objc_msgSend(webView, @selector(setCustomUserAgent:), userAgent); */

                    loadURL(_startURL);
        }