add: this.rowCountChanged(this.rows - length, length); 
context:   addRows: function(rows)  {    var length = rows.length;    for(var i = 0; i < length; i++)      this.rows = this.data.push(rows[i]);  },
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/d8806e94f22bf0595e7971e52410f9be073a3b2b/pageInfo.js/clean/browser/base/content/pageInfo.js