function writeCookie(strName, strValue, intDays)
{
	if(intDays)
	{
		var date = new Date();
		date.setTime(date.getTime() + (intDays*24*60*60*1000));
		var strExpires = "; expires=" + date.toGMTString();
	}
	else var strExpires = "";

	document.cookie = strName + "=" + strValue + strExpires + "; path=/";
}

function readCookie(strName)
{
	var strNameEQ = strName + "=";
	
	var arrCookies = document.cookie.split(';');
	
	for(var i = 0; i < arrCookies.length; i++)
	{
		var c = arrCookies[i];
		while (c.charAt(0) == ' ') c = c.substring(1,c.length);
		if (c.indexOf(strNameEQ) == 0) return c.substring(strNameEQ.length,c.length);
	}

	return "";
}

function deleteCookie(strName)
{
	writeCookie(strName, "", -1);
}