code: function unique(oldArray) {
      var nIndex,
        nLen = oldArray.length,
        aArr = [];
      for (nIndex = 0; nIndex < nLen; nIndex++) {
        if (!contains(aArr, oldArray[nIndex][1])) {
          aArr.push(oldArray[nIndex]);
        }
      }
      return aArr;
    }
docs: Removes duplicated values in an array
  @param oldArray
  @returns {Array}