var imgObjets1a = new Image(252,144);
var imgObjets1b = new Image(252,144);
var imgObjets1c = new Image(252,144);

imgObjets1a.src = "Objets1a.jpg"
imgObjets1b.src = "Objets1b.jpg"
imgObjets1c.src = "Objets1c.jpg"

function show(imgPainting){
  //copy the value to the display image
  document.imgObjets.src = imgPainting.src;
}