public void on_btnExecute_clicked(object o, EventArgs args)
        {
            try
            {
                lib.libWebsites lws = new lib.libWebsites();
                string sitename= this.GetSelectedSite();
                string url = lws.GetSiteUrl(sitename);
                Console.Write(url);

                StringCollection keywords = lws.GetSiteKeywords(sitename);
                lib.libGoogleQuery lgc = new lib.libGoogleQuery();
                string resulturl = lgc.ProcessSite(url,keywords,sitename);
                web.RenderData (resulturl, "file:///tmp", "text/html");
            }

            catch(Exception e)
            {
                Console.WriteLine("Error");//no se donde, daba error por no haber catch
            }
        }
        public void on_btnExecute_clicked(object o, EventArgs args)
        {
            lib.libWebsites lws = new lib.libWebsites();
            string sitename= this.GetSelectedSite();
            string url = lws.GetSiteUrl(sitename);
            Console.Write(url);

            StringCollection keywords = lws.GetSiteKeywords(sitename);
            lib.libGoogleQuery lgc = new lib.libGoogleQuery();
            string resulturl = lgc.ProcessSite(url,keywords,sitename);
            web.LoadUrl(resulturl);
        }