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

//Create respective conditional styles.
var styleBlue = new GC.Spread.Sheets.Style();
var stylePink = new GC.Spread.Sheets.Style();
var styleLime = new GC.Spread.Sheets.Style();
var styleYellow = new GC.Spread.Sheets.Style();
var styleEmpty = new GC.Spread.Sheets.Style();
styleBlue.backColor = "blue";
styleBlue.foreColor = "white";
stylePink.backColor = "pink";
styleLime.backColor = "lime";
styleYellow.backColor = "yellow";
styleEmpty.backColor = undefined;
styleEmpty.foreColor = undefined;

//Set conditional formats to respective cells.
activeSheet.conditionalFormats.addCellValueRule(
    GC.Spread.Sheets.ConditionalFormatting.ComparisonOperators.EqualsTo,
    0,
    undefined,
    styleEmpty,
    [new GC.Spread.Sheets.Range(1, 1, 1, 1)]);
activeSheet.conditionalFormats.addCellValueRule(
    GC.Spread.Sheets.ConditionalFormatting.ComparisonOperators.LessThan,
    10,
    undefined,
    styleBlue,
    [new GC.Spread.Sheets.Range(1, 1, 1, 1)]);

activeSheet.conditionalFormats.addCellValueRule(
    GC.Spread.Sheets.ConditionalFormatting.ComparisonOperators.Between,
    20,
    50,
    stylePink,
    [new GC.Spread.Sheets.Range(2, 1, 1, 1)]);

activeSheet.conditionalFormats.addCellValueRule(
    GC.Spread.Sheets.ConditionalFormatting.ComparisonOperators.Between,
    50,
    80,
    styleLime,
    [new GC.Spread.Sheets.Range(3, 1, 1, 1)]);

activeSheet.conditionalFormats.addCellValueRule(
    GC.Spread.Sheets.ConditionalFormatting.ComparisonOperators.GreaterThan,
    80,
    undefined,
    styleYellow,
    [new GC.Spread.Sheets.Range(4, 1, 1, 1)]);

activeSheet.getCell(2, 1).value(25);
activeSheet.getCell(3, 1).value(77);
activeSheet.getCell(4, 1).value(88);
                 }