function hideRows5to60() {
  var spreadsheet = SpreadsheetApp.getActive();
  spreadsheet.getRange('5:60').activate();
  spreadsheet.getActiveSheet().hideRows(spreadsheet.getActiveRange().getRow(), spreadsheet.getActiveRange().getNumRows());
  spreadsheet.getRange('61:61').activate();
};

function showRows5to60() {
  var spreadsheet = SpreadsheetApp.getActive();
  spreadsheet.getRange('4:61').activate();
  spreadsheet.setCurrentCell(spreadsheet.getRange('A61'));
  spreadsheet.getActiveSheet().showRows(3, 58);
};

function onEdit() {
  var ss = SpreadsheetApp.getActiveSpreadsheet();
  var s = ss.getSheetByName('Duct Leakage');
  var cellSh = s.getRange('A4').getValues();
  }
  if (cellSh = 'unhide');
  {
    showRows5to60();
  }
  if (cellSh = 'hide');
  {
    hideRows5to60();
   }