function affiche(item, val){ 
	for (var v=0;v<val;v++)
	{
		document.getElementById("big-cat"+v).style.display = "none";
	}
	if (document.getElementById(item).style.display == "none"){ 
	  document.getElementById(item).style.display = "block";
	} 
	else{ 
	  document.getElementById(item).style.display = "none";
	} 
	
}

function cache(item){ 
	document.getElementById(item).style.display = "none";
}

function switchImage(imgName, imgSrc )
{
	if (document.images){
		if (imgSrc != "none"){
			document.images[imgName].src = imgSrc;
		}
	}
}

function testdate( ele1, ele2)
{
	var titi = document.getElementById(ele1);
		alert ( titi.value() );
	var toto = document.getElementById(ele2);
		
}
function afficher_image(var_1,var_2) {
  document.getElementById(var_1).src=var_2;
		document.refresh;
}