function DNA(str_account) {
   this.str_account = str_account;
   this.arr_data = new Array();
}
DNA.prototype = {

   track: function() {
      this.gather_basics();
      this.gather_transactional();
      this.send();
   },

   goal: function(str_name) {
      this.add_data('g', str_name);
   },

   gather_basics: function() {
      this.add_data('r', (document.referrer ? document.referrer : 'unknown'));
      this.add_data('c', (document.cookie ? document.cookie : 'unknown'));
   },

   gather_transactional: function() {
      // Check if it has been defined already before...
      if ((typeof this.arr_data['tv']) == 'undefined') {
         this.add_data('tv', (((typeof _dna_trans_val) != 'undefined') ? _dna_trans_val : 'unknown'));
      }
      if ((typeof this.arr_data['tr']) == 'undefined') {
         this.add_data('tr', (((typeof _dna_trans_ref) != 'undefined') ? _dna_trans_ref : 'unknown'));
      }
   },

   trans_val: function(mix_val) {
      this.add_data('tv', mix_val);
   },

   trans_ref: function(str_ref) {
      this.add_data('tr', str_ref);
   },

   add_data: function(str_field, mix_val) {
      this.arr_data[str_field] = mix_val;
   },

   send: function() {
      var str_url = '?a='+this.str_account;
      for (str_field in this.arr_data) {
         // Ignore functions in Array
         if ((typeof this.arr_data[str_field]) != 'function') {
            str_url += '&'+str_field+'='+this.encode(this.arr_data[str_field]);
         }
      }
      document.write('<script src="https://dna.doc-net.com/dna2.js'+str_url+'"></script>');
   },

   /**
    * Compatible string-encode
    */
   encode: function(str_val) {
      if(encodeURIComponent instanceof Function) {
         return encodeURIComponent(str_val);
      } else {
         return escape(str_val);
      }
   }


};