// JavaScript Document
function swapImg(item,img){
	item.src = 'medias/bt'+img+'.png';
}
function smenuOver(sm){
	document.getElementById('s01').style.visibility = 'hidden';
	document.getElementById('s03').style.visibility = 'hidden';
	if(sm != undefined){
		document.getElementById(sm).style.visibility ='visible';
	}
}