function setlang(lang)
{
	if(!lang) lang='en';
	var today = new Date();
	var expire = new Date();
	var nDays=10;
	expire.setTime(today.getTime() + 3600000*24*nDays);
	document.cookie = "lang="+escape(lang)
		         + ";expires="+expire.toGMTString();
		         
	window.location.reload(true);
}