function getCookie(name) {
	var start = document.cookie.indexOf(name+"=" );
	var len = start + name.length + 1;
	if ((!start) && (name != document.cookie.substring(0, name.length ))) {
		return null;
	}
	if (start == -1) return null;
	var end = document.cookie.indexOf(';', len);
	if (end == -1) end = document.cookie.length;
	return unescape(document.cookie.substring(len, end));
}

function setCookie(name, value, expiresInDays, path, domain, secure) {
	var today = new Date();
	today.setTime(today.getTime());
	var expires = 0;
	if (expiresInDays) {
		expires = expiresInDays * 1000*60*60*24;
	}
	var expires_date = new Date(today.getTime() + (expires));
	document.cookie = name+'='+escape(value) +
		((expires) ? ';expires='+expires_date.toGMTString() : '') +
		((path) ? ';path='+path : '') +
		((domain) ? ';domain='+domain : '') +
		((secure) ? ';secure' : '');
}

function deleteCookie(name, path, domain) {
	if (getCookie(name)) document.cookie = name+'=' +
		((path) ? ';path='+path : '') +
		((domain) ? ';domain='+domain : '') +
		';expires=Thu, 01-Jan-1970 00:00:01 GMT';
}