function SwapStartImages(n,dir)

{

	var z;

	if (n == "logo_cast")

		z = document.getElementById('st_tlo1');

	else

		z = document.getElementById('st_tlo2');	

	if(dir == "up")

		z.src = 'graphics/'+n+'2.jpg';

	else

		z.src = 'graphics/'+n+'.jpg';	

}