code: function fidjDayOfSameWeek(date, dayOfWeek) {
      return new Date(date.getFullYear(), date.getMonth(),
          date.getDate() + dayOfWeek - (date.getDay() || 7), 0, 0, 0, 0);
  }
docs: Return a Date object of the dayOfWeek of the same week as the given date
  BEWARE : in this case the week begin on Monday and end at Sunday
  
  @param {Date} date Any date of this week
  @param {Number} dayOfWeek 1 for Monday, 2 for Thuesday, ... , 7 for Sunday (date.getDay() || 7)
  @returns {Date}