function setCookie(c_name,value,expiredays)
{
var exdate=new Date(); exdate.setDate(exdate.getDate()+expiredays);
document.cookie=c_name+ "=" +escape(value)+ ((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}
function setLang(lang) { setCookie("lang",lang,35); }