function delete_cookie ( cookie_name )
{
  var cookie_date = new Date ( );  // current date & time
  cookie_date.setTime ( cookie_date.getTime() - 1 );
  document.cookie = cookie_name += "=; expires=" + cookie_date.toGMTString();
}

var url = location.href;

if (url.indexOf("avad=") > 0) {
      var affdata;
      var merchant_id = 10067;
      var cookie_name = 'avant_' + merchant_id;
      var cookie_days = 120;
      var cookie_domain = '.marissacollections.com';
      var aUrl = url.split("avad=");

      // Delete any existing cookie
      delete_cookie(cookie_name);

      // Parse out tracking data from the url
      if (aUrl[1].indexOf("&") > 0) {
            affdata = aUrl[1].substring(0, aUrl[1].indexOf("&"));
      }
      else {
            affdata = aUrl[1];
      }

      // Avant Direct Link Tracking
      if (url.indexOf("avdt=") > 0) {
            if (url.indexOf("ctc=") > 0) {
                  var ctc = '';
                  var aCtc = url.split("ctc=");
                  var aAffData = affdata.split("_");
                  var iCount = aAffData.length;

                  if (iCount == 3) {
                        affdata += '_0';
                        iCount = 4;
                  }

                  if (iCount == 4) {
                        if (aCtc[1].indexOf("&") > 0) { ctc = aCtc[1].substring(0, aCtc[1].indexOf("&")); }
                        else { ctc = aCtc[1]; }

                        if (ctc.length > 0) {
                              if (affdata.lastIndexOf('_') == (affdata.length - 1)) { affdata += encodeURIComponent(ctc); }
                              else { affdata += '_' + encodeURIComponent(ctc); }
                        }
                  }
            }

            var av_url = 'http://www.avantlink.com/click.php?mi=' + merchant_id + '&avad=' + affdata + '&refurl=' + encodeURIComponent(document.referrer);
            try { document.write('<s'+'cript language="javascript" src="'+av_url+'"></s'+'cript>'); }
            catch(e){}
      }

      var expdate = new Date();
      expdate.setTime(expdate.getTime() + cookie_days*24*60*60*1000);
      document.cookie = cookie_name + "=" + encodeURIComponent(affdata) + "; expires=" + expdate + "; path=/; domain=" + cookie_domain + ";";

}