function CheckCookie(sName)
{
	var chkCookie;

	chkCookie = GetCookie(sName); // ÄíÅ°°ª Àоî¿Â´Ù.

	if(!chkCookie) // ÄíÅ°°¡ ¾øÀ»¶§
	{
		return false;
	}
	return true;
}

function SetCookie(sName, sValue, expireDays)
{
	var date = new Date();
	date.setHours( date.getHours() + expireDays ); // ½Ã°£À¸·Î ÀÔ·Â. expireDays
	document.cookie = sName + "=" + escape(sValue) + "; path=/; expires=" + date.toGMTString() + ";"; // ÄíÅ° ¹Ú´Â´Ù.
}

function GetCookie(sName)
{
	var aCookie = document.cookie.split("; "); // ¼¼¹ÌÄÝ·ÐÀ¸·Î ÄíÅ°°ªÀ» ³ª´«´Ù.
	for (var i=0; i < aCookie.length; i++)
	{
		var aCrumb = aCookie[i].split("="); // name/value º°·Î ³ª´«´Ù
		if (sName == aCrumb[0]) return unescape(aCrumb[1]);
	}
	return null;   // ÄíÅ°°¡ ¾øÀ»Â½¿¡
}

function DelCookie(sName)
{
	var date = new Date();
	sValue = GetCookie("sName");
	document.cookie = sName + "=" + sValue + "; path=/; expires=" + date.toGMTString() + ";"; // ÄíÅ° Áö¿î´Ù
//	 window.close();
}