anchor.diff:  
       row.style.display = 'none';
       $('input-body').appendChild(row)
  +    registerRowEventHandlers(row)
       registerDraggablesAndDroppables()
       showEmptyMessage()
   
  
positive.code:     var activity = selectedActivity()
      if (!activity.id || !activity.name) return
      var cells = []
      var dayCount = ${period.dayRanges[0].days}.length
      var rowCount = $$("#input-body tr").length - 1
      // header
      var activityName = 'grid[' + rowCount + '].activity';
  
negative.code:         if (parentRC[0] == childRC[0]) {
              //need to set up ajax call for move
              if (wholeElement.firstChild == null) {
                  executePlannedActivityMove(parentRC[0], parentRC[1], childRC[1])
                  setUpMovingMarker(draggable, dropZone)
              }
          }
  