Hi Les,
For active page use the following line.
app.select(app.activeWindow.activePage.allPageItems);
For active spread use the following lines.
var _spread = app.activeWindow.activeSpread.allPageItems, _objects = [];
for(var i =0;i<_spread.length;i++)
{ if(_spread[i].parentPage !=null) { _objects.push(_spread[i]); } }
app.select(_objects);
Regards,
Chinna