[line 29]
User Agent Normalizer Return the safari user agent stripping out
all the chararcters between U; and Safari/xxx
e.g Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_4_11; fr) AppleWebKit/525.18 (KHTML, like Gecko) Version/3.1.1 Safari/525.18 becomes Mozilla/5.0 (Macintosh Safari/525