function chgPh(id){
	ph = 0;

	if (id>=0){
		tblIdPh = new Array();
		tblIdPh[0] = "java";
		tblIdPh[1] = "prolog";
		nbId = tblIdPh.length;

		for (i=0;i<nbId;i++){
			if (document.getElementById("lk-"+tblIdPh[i]).style.display=="block")
				ph = i;
		}

		oldIdPh = tblIdPh[ph];
		ph++;
		if (ph==nbId) ph = 0;
		if (id!=0) ph = id - 1;
		newIdPh = tblIdPh[ph];

		document.getElementById("cdr-ph").style.background = "#fff url(img/accueil/"+newIdPh+".jpg) no-repeat";
		document.getElementById("lk-"+oldIdPh).style.display = "none";
		document.getElementById("pg-"+oldIdPh).style.color = "#fff";
		document.getElementById("lk-"+newIdPh).style.display = "block";
		document.getElementById("pg-"+newIdPh).style.color = "#ed145a";
	}

	if (id>0){
		clearTimeout(a);
	}

	a = setTimeout("chgPh(0)",10000);	
}


function cnstrctn(){
	alert("Partie bientôt disponible !");
	return false;
}

cnamBill = 1;
function chgCnamBil(oldBill,newBill){
	document.getElementById("bln-" + oldBill).style.display = "none";
	document.getElementById("bln-" + newBill).style.display = "block";
}

function verifCtt(){
	var cpt = 0;
	if (document.getElementById('adr_mail').value.length<8) cpt++;
	if (document.getElementById('message').value.length<8) cpt++;
	if (cpt>0){
		alert("Tous les champs sont obligatoires");
		return false;
	}
	return true;
}

function messOK(bck){
	alert("Merci pour votre message");
	window.location.href = bck;
}