function swapMenu(num1,num2,etat,format){
	document["menu"+num1+"_"+num2].src = '/images/menu'+num1+'_'+num2+'_'+etat+'.'+format;
}

function swapBtn(nom,num,etat,format){
	document["btn"+nom+num].src = '/images/btn'+nom+'_'+etat+'.'+format;
}