function getCookie(nome, defval) {
	var valore = defval;
	var valbegin = document.cookie.indexOf(nome + "=");
	if (valbegin != -1) {
		var valend = document.cookie.indexOf(";", valbegin);
		if (valend == -1) valend = document.cookie.length;
		valbegin = valbegin + nome.length + 1;
		valore = document.cookie.substring(valbegin, valend);
	}
	return(valore);
}

function getCod(nome) {
	var tempstring = getCookie(nome, "");
	var tempdate = new Date();
	if (tempstring == "") {
		var tempnumb = Date.parse(tempdate.toGMTString());
		tempnumb = Math.round((tempnumb - 915148800000) / 1000);
		tempstring = "x" + tempnumb;
	}
	tempdate.setDate(tempdate.getDate() + 210);  // 7 m
	document.cookie = nome + "=" + tempstring + "; path=/; expires=" + tempdate.toGMTString();
	return getCookie(nome, "");
}