function open_bloc(x){
var d=document.getElementById(x);
d.style.display="block";
}

function close_bloc(){
for(var i=1;i<=2;i++)
	{	var d=document.getElementById('menu'+i);
		d.style.display="none";
	}
}

function verif22(email,msg) {
	var arobase = email.indexOf("@")
	var point = email.lastIndexOf(".")
	
	
	//Verification de l'email
	if((arobase < 2)||(point + 2 > email.length)||(point < arobase+2)) 
	{ 
    alert('Cet e-mail n\'est pas valide !');
    document.getElementById("erreur_image").style.visibility="visible";
	return false;
   }
  if(msg==""){
	  alert('Ce message n\'est pas valide !');
    document.getElementById("erreur_image_msg").style.visibility="visible";
	return false;
	  }
}