Реализация метода POST в Ajax для латиницы и кириллицы:

function loadXMLDoc_2(url,mess){ var copyright='smirnoff04@mail.ru'; var mess2=urlencode(mess,copyright); if (window.XMLHttpRequest) { param="text="+mess2; req = new XMLHttpRequest(); req.onreadystatechange=formPost; // function req.open("POST", url, true); req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); req.send(param); } else if (window.ActiveXObject) { req = new ActiveXObject("Microsoft.XMLHTTP"); if (req) { req.onreadystatechange = formPost; req.open("POST", url, true); req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); param="text="+mess2; req.send(param); } } }//func_end

Источники: Development: Drew McLellan + Michael Smirnov http://www.xml.com/lpt/a/2005/02/09/xml-http-request.html http://www.smirnov.sp.ru/w/cgi_java/cgi_programming2.html