function activateGame(index)
{
	var game1 = document.getElementById('mbike'+1);
	var game2 = document.getElementById('mbike'+2);
	
    if (index==1)
		{
		game1.style.display='block';
		game2.style.display='none';
		}
	else
		{
		game1.style.display='none';
		game2.style.display='block';
		}
}