function setCookie ( cookieName, cookieValue, nDays )
{
	var today = new Date();
	var expire = new Date();
	
	if ( nDays == null || nDays == 0)
		nDays = 1;

	expire.setTime ( today.getTime() + 3600000 * 24 * nDays );
	
	document.cookie = cookieName + "=" + escape ( cookieValue ) + ";expires=" + expire.toGMTString();
}

function getCookie ( cookieName )
{
	var theCookie = "" + document.cookie;
	var ind = theCookie.indexOf ( cookieName );

	if ( ind == -1 || cookieName == "" )
		return ""; 

	var ind1 = theCookie.indexOf ( ';', ind );

	if ( ind1 == -1 )
		ind1 = theCookie.length;

	return unescape ( theCookie.substring ( ind + cookieName.length + 1, ind1 ) );
}

function deleteCookie ( cookieName )
{
	setCookie ( cookieName, '', -1 );
}