function  setcampaign()  {

  var  thisurl        =  unescape(window.location.href);
  var  imagesrc       =  "/util_sale.php";
  var  qs             =  "";

  var  rew            =  0;
  var  std            =  thisurl.indexOf('?');
  var  sr_index_rew   =  thisurl.indexOf('/sr/');
  var  b_index_rew    =  thisurl.indexOf('/b/');

  if  (sr_index_rew > 0)  { rew =  sr_index_rew;  }
  if  (b_index_rew  > 0)  { rew =  b_index_rew;   }

  if  ((sr_index_rew < b_index_rew) && (sr_index_rew > 0))  { rew = sr_index_rew; }
  if  ((b_index_rew < sr_index_rew) && (b_index_rew > 0))   { rew = b_index_rew;  }


  if (std > 0)  {

   qs  =  thisurl.substr(std);

  }
  else  if  (rew > 0)  {

   var  keyvalue  =  thisurl.substr((rew + 1)).split(/\//);

   for  (i=0; i<keyvalue.length; i++)  {

     if       (i == 0)     {  qs +=  "?" + keyvalue[i];  }
     else if  (i % 2 == 0) {  qs +=  "&" + keyvalue[i];  }
     else                  {  qs +=  "=" + keyvalue[i];  }

   }

  }
  else  {

    //  The scenario in which nothing happens

  }

  if  (qs.length > 0)  {

    //  using DOM to set campaign image (ci)

    var  ci  =  document.createElement('img');

    ci.setAttribute('id',     'tracker');
    ci.setAttribute('src',    imagesrc + qs);
    ci.setAttribute('width',  '1');
    ci.setAttribute('height', '1');
    ci.setAttribute('alt',    '');

    document.body.appendChild(ci);

    //  alert(document.getElementById('tracker').src);

    //  alert(qs);
  }

}