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 theCookie=""+document.cookie;
    var ind=theCookie.indexOf(name);
    if (ind==-1 || name=="")
        {
            return false; 
        }
    return true;

}

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