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;
}