function setSessionCookie(name, value)
{
	var cookie = name + '=' + escape(value); 
	document.cookie = cookie;
}

function setYearCookie(name, value)
{
	var cookie = name + '=' + escape(value); 
	var expires = new Date();
	expires.setTime(expires.getTime() + 1000 * 60 * 60 * 24 * 365);
	cookie += '; expires=' + expires.toGMTString();
	document.cookie = cookie;
}

function setMonthCookie(name, value)
{
	var cookie = name + '=' + escape(value); 
	var expires = new Date();
	expires.setTime(expires.getTime() + 1000 * 60 * 60 * 24 * 30);
	cookie += '; expires=' + expires.toGMTString();
	document.cookie = cookie;
}

function removeCookie(name)
{
	var cookie = name + '= xx'; 
	var expires = new Date();
	expires.setTime(expires.getTime() - 1000);
	cookie += '; expires=' + expires.toGMTString();
	document.cookie = cookie;
}


function getCookie(name)
{
	var begin = document.cookie.indexOf(name + '=');
	if (begin == -1)
		return '';

	begin += (name.length + 1);
	var end = document.cookie.indexOf(';', begin);
	if (end == -1)
		end = document.cookie.length;
	return unescape(document.cookie.substring(begin, end));
}