//===============================================================
// javascript cookie management - version 1
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 null;
}

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


//===============================================================
// javascript cookie management - version 2
function setCookie(cookieName, cookieValue, expires, path, domain, secure) 
{
	document.cookie = escape(cookieName) + '=' + escape(cookieValue)
	+ (expires ? '; expires=' + expires.toGMTString() : '')
	+ (path ? '; path=' + path : '')
	+ (domain ? '; domain=' + domain : '')
	+ (secure ? '; secure' : '');
}

function getCookie(cookieName) 
{
	var cookieValue = '';
	var posName = document.cookie.indexOf(escape(cookieName) + '=');

	if (posName != -1) 
	{
		var posValue = posName + (escape(cookieName) + '=').length;
		var endPos = document.cookie.indexOf(';', posValue);
		if (endPos != -1) cookieValue = unescape(document.cookie.substring(posValue, endPos));
		else cookieValue = unescape(document.cookie.substring(posValue));
	}

	return (cookieValue);
}

function clearCookie(cookieName) 
{
	var now = new Date();
	var yesterday = new Date(now.getTime() - 1000 * 60 * 60 * 24);

	setCookie(cookieName, 'cookieValue', yesterday);
}