window.onload = function()
{
 var spread =
 new GC.Spread.Sheets.Workbook(document.getElementById("ss"),{sheetCount:3});
 var sheet = spread.getActiveSheet();
 var sheet = spread.getActiveSheet();

 // Set number of rows to 3.
 sheet.setRowCount(3, GC.Spread.Sheets.SheetArea.viewport);
 sheet.setValue(0, 0, "Row 1", GC.Spread.Sheets.SheetArea.viewport);
 sheet.setValue(1, 0, "Row 2", GC.Spread.Sheets.SheetArea.viewport);
 sheet.setValue(2, 0, "Row 3", GC.Spread.Sheets.SheetArea.viewport);
 sheet.setColumnWidth(0, 90.0, GC.Spread.Sheets.SheetArea.viewport);

 $("#button1").click(function()
   {
     // Add one row to Row 2.  
     sheet.addRows(1, 1);
     sheet.setValue(1, 0, "Added row");
   });

 $("#button2").click(function()
   {
    // Add one row to Row 2.  
    sheet.addColumns(1, 1);
    sheet.setValue(0, 1, "Added column");
  });
}