var jam_ptrackurl = 'http://click.jamba.de/click.asp?site=2703&ref=160024&type=html&subid=&hnb=44&diurl=';
var urlEncode = "affilinet";

var your_parameter = "urlEncType=" + urlEncode;
    your_parameter = your_parameter + "&jam_ptrackurl=" + jam_ptrackurl;

document.writeln('<scr' + 'ipt' + ' src="http://www.jamba.de/dew/internal/advert/toplogo_rotary_120x180.jsp?' + your_parameter + '">' + '</scr' + 'ipt>');