string script_1 = "document.getElementsByTagName('head')[0].appendChild(document.createElement('script')).src = '//ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js'";
            web.ExecuteScriptAsync(script_1);
            string script_2 = "document.onclick=function(ev){var oEvent = ev ||event;alert(oEvent.clientX+'，'+oEvent.clientY);//     IE浏览器兼容}";
            web.ExecuteScriptAsync(script_2);