function afficher(image,bloc){


switch(image) {
 case "camion":
 	document.getElementById(bloc).style.visibility = 'visible';
	document.getElementById(bloc).style.top = '275px';
	document.getElementById(bloc).style.left = '277px';
 break;
 case "scooter":
  	document.getElementById(bloc).style.visibility = 'visible';
	document.getElementById(bloc).style.top = '80px';
	document.getElementById(bloc).style.left = '300px';
 break;
 case "cote_vitrine":
  	document.getElementById(bloc).style.visibility = 'visible';
	document.getElementById(bloc).style.top = '10px';
	document.getElementById(bloc).style.left = '350px';
 break;
 case "haut_vitrine":
  	document.getElementById(bloc).style.visibility = 'visible';
	document.getElementById(bloc).style.top = '275px';
	document.getElementById(bloc).style.left = '277px';
 break;
 case "vitrine":
  	document.getElementById(bloc).style.visibility = 'visible';
	document.getElementById(bloc).style.top = '300px';
	document.getElementById(bloc).style.left = '277px';
 break;
  case "panneau_arbre":
  	document.getElementById(bloc).style.visibility = 'visible';
	document.getElementById(bloc).style.top = '250px';
	document.getElementById(bloc).style.left = '20px';
 break;
   case "immeuble":
  	document.getElementById(bloc).style.visibility = 'visible';
	document.getElementById(bloc).style.top = '200px';
	document.getElementById(bloc).style.left = '277px';
 break;
   case "barre":
  	document.getElementById(bloc).style.visibility = 'visible';
	document.getElementById(bloc).style.top = '310px';
	document.getElementById(bloc).style.left = '277px';
 break;
   case "panneau":
  	document.getElementById(bloc).style.visibility = 'visible';
	document.getElementById(bloc).style.top = '275px';
	document.getElementById(bloc).style.left = '277px';
 break;
}




} // fin function
function masquer(bloc) {
document.getElementById(bloc).style.visibility = 'hidden';
}