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);
}

function gup(name) {
  name = name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");
  var regexS = "[\\?&]"+name+"=([^&#]*)";
  var regex = new RegExp( regexS );
  var results = regex.exec( window.location.href );
  if( results == null )
    return "";
  else
    return results[1];
}

function get_referer() {
    var referer = '';

    if (gup('rr')) {
        referer = gup('rr');
        return referer;
    } else {
        referer = document.referrer;

        if (referer) {
            var parts = referer.split('/');
            var referer = parts[2];

            if (referer.indexOf('mariomarathon.com') < 0) {
                return referer;
            }
        }

        return '';
    }
}

var c_name = 'mm5_referer';
var referer = readCookie(c_name);
if (!referer || gup('rr')) {
  referer = get_referer();
  createCookie(c_name, referer);
}