window.onload = function()
{
  var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"),{sheetCount:3});
  var activeSheet = spread.getActiveSheet();
  // Set to be always in input mode.
  spread.bind(GC.Spread.Sheets.Events.EnterCell, function (event, data) 
  {
    var sheet = data.sheet;
    activeSheet.startEdit(false);
  });
}