diff --git a/src/ghtml-webkit.c b/src/ghtml-webkit.c
index 7ebfc78..68e797e 100644
--- a/src/ghtml-webkit.c
+++ b/src/ghtml-webkit.c
@@ -31,6 +31,8 @@ static void _on_load_progress_changed(WebKitWebView * view, gint progress,
 		gpointer data);
 static void _on_load_started(WebKitWebView * view, WebKitWebFrame * frame,
 		gpointer data);
+static void _on_script_alert(WebKitWebView * view, WebKitWebFrame * frame,
+		gchar * message, gpointer data);
 static void _on_title_changed(WebKitWebView * view, WebKitWebFrame * frame,
 		const gchar * title, gpointer data);
 
@@ -57,6 +59,8 @@ GtkWidget * ghtml_new(Surfer * surfer)
 				_on_load_progress_changed), widget);
 	g_signal_connect(G_OBJECT(view), "load-started", G_CALLBACK(
 				_on_load_started), widget);
+	g_signal_connect(G_OBJECT(view), "script-alert", G_CALLBACK(
+				_on_script_alert), widget);
 	g_signal_connect(G_OBJECT(view), "title-changed", G_CALLBACK(
 				_on_title_changed), widget);
 	/* scrolled window */
@@ -260,6 +264,16 @@ static void _on_load_started(WebKitWebView * view, WebKitWebFrame * frame,
 }
 
 
+static void _on_script_alert(WebKitWebView * view, WebKitWebFrame * frame,
+		gchar * message, gpointer data)
+{
+	Surfer * surfer;
+
+	surfer = g_object_get_data(G_OBJECT(data), "surfer");
+	surfer_warning(surfer, message);
+}
+
+
 static void _on_title_changed(WebKitWebView * view, WebKitWebFrame * frame,
 		const gchar * title, gpointer data)
 {
diff --git a/src/surfer.c b/src/surfer.c
index c54d401..4805ce6 100644
--- a/src/surfer.c
+++ b/src/surfer.c
@@ -488,6 +488,22 @@ void surfer_unselect_all(Surfer * surfer)
 }
 
 
+/* surfer_warning */
+void surfer_warning(Surfer * surfer, char const * message)
+{
+	GtkWidget * dialog;
+
+	dialog = gtk_message_dialog_new((surfer != NULL)
+			? GTK_WINDOW(surfer->window) : NULL,
+			GTK_DIALOG_DESTROY_WITH_PARENT,
+			GTK_MESSAGE_WARNING, GTK_BUTTONS_OK, "%s", message);
+	gtk_window_set_title(GTK_WINDOW(dialog), "Warning");
+	g_signal_connect(G_OBJECT(dialog), "response", G_CALLBACK(
+				gtk_widget_destroy), NULL);
+	gtk_widget_show(dialog);
+}
+
+
 /* surfer_zoom_in */
 void surfer_zoom_in(Surfer * surfer)
 {
diff --git a/src/surfer.h b/src/surfer.h
index 870b647..51e7ad7 100644
--- a/src/surfer.h
+++ b/src/surfer.h
@@ -78,6 +78,7 @@ void surfer_set_title(Surfer * surfer, char const * title);
 
 /* useful */
 int surfer_error(Surfer * surfer, char const * message, int ret);
+void surfer_warning(Surfer * surfer, char const * message);
 
 void surfer_open(Surfer * surfer, char const * url);
 void surfer_open_dialog(Surfer * surfer);