$(document).ready(function () 
{
    var spread = 
    new GC.Spread.Sheets.Workbook(document.getElementById("ss"),{sheetCount:3});
    var sheet = spread.getActiveSheet();
    
    // Allow selection of multiple ranges
    sheet.selectionPolicy(GC.Spread.Sheets.SelectionPolicy.MultiRange);
    
    // Create two different selection ranges.
    sheet.addSelection(0, 0, 2, 2);
    sheet.addSelection(3, 3, 2, 2);
});