function show(divname) {
 var panelElement = document.getElementById(divname);

	  panelElement.style.visibility = 'visible';
	  panelElement.style.display = 'block';

}

function hide(divname) {
 var panelElement = document.getElementById(divname);

	  panelElement.style.visibility = 'hidden';
	  panelElement.style.display = 'none';

}


function changeimg (image,fichier) {
document.getElementsByName(image)[0].src= fichier;
};