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, expires, path, domain, secure)
{
	var today = new Date();

	today.setTime(today.getTime());
	
	if (expires) expires = expires*24*60*60*1000;	// days

	var expires_date = new Date(today.getTime() + (expires));

	document.cookie = name + '=' + escape(value) +
		((expires) ? ';expires=' + expires_date.toGMTString() : '') +  //expires.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';
	}
}