function createCookie(name, value, days)
{
		if (days)
		{
				var date = new Date();
				date.setTime( date.getTime()+(days*24*60*60*1000) );
				var expires = "; expires=" + date.toGMTString();
		}

		else var expires = "";

		document.cookie = name + "=" + value + expires + "; path=/";
}

function readCookie(name)
{
		var nameEQ = name + "=";
		var ca = document.cookie.split(';');

		for(var i=0;i < ca.length;i++)
		{
				var c = ca[i];
				while (c.charAt(0) == ' ') c = c.substring(1,c.length);
				if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length, c.length);
		}

		return "";
}

function eraseCookie(name)
{
		createCookie(name, "", -1);
}