istate = 0;

function do_reset()
{
	var ipod_swap = document.getElementById('ipod_swap');
	var ipod_reset = document.getElementById('ipod_reset');
	var ipod_debug = document.getElementById('ipod_debug');
	var ipod_disk = document.getElementById('ipod_disk');

	if(istate != 1)
	{
		istate = 1;
		ipod_swap.style.backgroundPosition = '0px -272px'
		ipod_reset.style.backgroundPosition = '0px -24px';
		ipod_debug.style.backgroundPosition = '-150px 0px';
		ipod_disk.style.backgroundPosition = '-304px 0px';
	}
	else
	{
		istate = 0;
		ipod_swap.style.backgroundPosition = '0px 0px';
		ipod_reset.style.backgroundPosition = '0px 0px';
	}
}

function do_debug()
{
	var ipod_swap = document.getElementById('ipod_swap');
	var ipod_reset = document.getElementById('ipod_reset');
	var ipod_debug = document.getElementById('ipod_debug');
	var ipod_disk = document.getElementById('ipod_disk');

	if(istate != 2)
	{
		istate = 2;
		ipod_swap.style.backgroundPosition = '0px -544px';
		ipod_reset.style.backgroundPosition = '0px 0px';
		ipod_debug.style.backgroundPosition = '-150px -24px';
		ipod_disk.style.backgroundPosition = '-304px 0px';
	}
	else
	{
		istate = 0;
		ipod_swap.style.backgroundPosition = '0px 0px';
		ipod_debug.style.backgroundPosition = '-150px 0px';
	}
}

function do_disk()
{		
	var ipod_swap = document.getElementById('ipod_swap');
	var ipod_reset = document.getElementById('ipod_reset');
	var ipod_debug = document.getElementById('ipod_debug');
	var ipod_disk = document.getElementById('ipod_disk');

	if(istate != 3)
	{
		istate = 3;
		ipod_swap.style.backgroundPosition = '0px -816px';
		ipod_reset.style.backgroundPosition = '0px 0px';
		ipod_debug.style.backgroundPosition = '-150px 0px';
		ipod_disk.style.backgroundPosition = '-304px -24px';
	}
	else
	{
		istate = 0;
		ipod_swap.style.backgroundPosition = '0px 0px';
		ipod_disk.style.backgroundPosition = '-304px 0px';
	}
}