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=/";
	return true;
}

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

function eraseCookies(searchString) {
	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(searchString) == 0) eraseCookie(c.substr(0,c.indexOf('=')));
	}
}

function readCookie(name) {
	var nameEQ = name + "=";
	var i,c;
	var ca = document.cookie.split(';');
	for(i=0;i < ca.length;i++) {
		c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return unescape(c.substring(nameEQ.length,c.length));
	}
	return null;
}
getCookie=get_cookie=readCookie;