function playSound(soundfile) {
	stopSound();
	Sound.play(soundfile,{replace:true});
	
	$$('.jsSoundStop').each(function(el){ 
	el.hide();
	});
}

function stopSound() {
	Sound.enable();
	Sound.play('/samples/silence.mp3',{replace:true});
	Sound.disable();
	Sound.enable();
	
	$$('.jsSoundPlay').each(function(el){ 
	el.show();
	});
}