// ftn to clear the cards
function clear_cards( selectedObj, groupObj, totalPieces, deckFolder ){
	if(!deckFolder) deckFolder = 'rider';

	selectedObj.clear();
	groupObj.clear();
        //for( var i = 1; i< 20; i++){
	groupObj.shuffle();
	// clear the current pieces images by putting them back to ghosts
	for( var i = 1; i <= totalPieces; i++ ){
		ChangeGhost(i, deckFolder);
	}

}