function affichbout(num){

var pr = document.getElementById(num);
 
	if (pr.style.display == "block") {
		pr.style.display = "none";
	} else {
		pr.style.display = "block";
	}

 }
 function effacbout(num)
 {
var pr = document.getElementById(num);
pr.style.display = "none";
 }