//This example uses the SheetMoving event.
window.onload = function(){
     var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"),{sheetCount:3});
     var activeSheet = spread.getActiveSheet();
     spread.bind(GC.Spread.Sheets.Events.SheetMoving, function (e, data) {
         alert(data.sheetName + '\n' +  'oldIndex: ' + data.oldIndex + '\n' +  'newIndex: ' + data.newIndex + '\n' +  'cancel: ' + data.cancel);
     });
     spread.bind(GC.Spread.Sheets.Events.SheetMoved, function (e, data) {
         alert(data.sheetName + '\n' +  'oldIndex: ' + data.oldIndex + '\n' +  'newIndex: ' + data.newIndex);
     });
}