var ads = '';
ads += '<'+'a href="http://adserver.o2.pl/rdr.php?id_url=176703" target';
ads += '="_blank"><'+'img src="http://f.o2.pl/frd42/5d37b82300129fcb4b6';
ads += 'fdcfb/300px250px-3.jpg/" border="0" height="250" width="300"';
ads += '><'+'/a>';
document.write(ads);