//Cache les divs
function cacheDiv(){
	document.getElementById("plomberie").style.display = "none";
	document.getElementById("chauffage").style.display = "none";
	document.getElementById("electricite").style.display = "none";
	document.getElementById("energie").style.display = "none";
}
function afficheDiv(id){
	cacheDiv();
	document.getElementById(id).style.display = "block";
}