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);
     });
                      }