var arr = document.getElementsByTagName( "a" );
var link = "http://registration.infosalons.biz/DESIGNBUILD11S/index.php";
for(var i=0; i < arr.length; i++) {
  var tagObj = arr[i];
  //if (tagObj.innerHTML != 'Register Now') continue;
  url = tagObj.href;          
  if (url.substring(0, link.length) != link) continue;

  var start = url.indexOf('?');
  var end   = url.length;
  var query = '';
  if (start > 0 && start + 1 < end) {
    query = url.substring(start+1, end);
    url = url.substring(0, start);
    var params = query.split('&');
    var flg = 0;
    var tmp = '';
    query = '';
    for (var i=0; i<params.length; i++) {
      var arr = params[i].split('=');
      if (arr[0] == 'utm_source' || arr[0] == 'utm_medium' || 
                                    arr[0] == 'utm_campaign') continue
      query += params[i] + '&';
    }
  }
  if (document.cookie.length > 0) {
    c_start = document.cookie.indexOf("origin_query=");
    if (c_start != -1) {
      c_start = c_start + 13;
      c_end   = document.cookie.indexOf(";", c_start);
      if (c_end == -1) c_end = document.cookie.length;
      query += document.cookie.substring(c_start, c_end);
    }
  }
  url += '?' + query;
  tagObj.href = url;
}