$(document).ready(function () {
     var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"),{sheetCount:3});
     var sheet = spread.getActiveSheet();
 // ヘッダに文字列を設定します。
sheet.setValue(0, 1, "Column Header", GC.Spread.Sheets.SheetArea.colHeader);
 sheet.setValue(1, 0, "Row Header", GC.Spread.Sheets.SheetArea.rowHeader);
 sheet.setColumnWidth(1, 120.0,GC.Spread.Sheets.SheetArea.colHeader);
 sheet.setColumnWidth(0, 90.0,GC.Spread.Sheets.SheetArea.rowHeader);
 });