Previous ajax post:
http://www.google.com/search?as_q=ajax&as_epq=&as_oq=&as_eq=&as_nlo=&as_nhi=&cr=&as_qdr=all&as_sitesearch=http%3A%2F%2Farduino.cc%2Fforum%2Findex.php&as_occt=any&tbs=&as_filetype=&as_rights=