var nb_checked=0;
function checkTheBox(checked){
	if(checked)
		nb_checked=nb_checked+1;
	else
		if(nb_checked>0)
			nb_checked=nb_checked-1;
	if(nb_checked>0){
		document.getElementById("FormProject").style.display="block";
	}else{
		document.getElementById("FormProject").style.display="none";
	}
}
function afficheChampsProjet(id, max){
	for(var i=0;i<max;i=i+1){
		if(document.getElementById(id+i).checked)
			checkTheBox(true);
	}
}