function setCookie(c_name, value, expiredays)
{
	var exdate=new Date();
	exdate.setDate(exdate.getDate()+expiredays);
	document.cookie = c_name+ "=" +escape(value)+((expiredays == null) ? "" : ";expires="+exdate.toGMTString());
}

function getCookie(c_name)
{
	if (document.cookie.length>0)
	{
		c_start = document.cookie.indexOf(c_name + "=");
		if (c_start!=-1)
		{
			c_start = c_start + c_name.length + 1;
			c_end = document.cookie.indexOf(";",c_start);
			if (c_end == -1)
				c_end = document.cookie.length;
			return unescape(document.cookie.substring(c_start, c_end));
		}
	}
	return "";
}