function verif(email) {
	var arobase = email.indexOf("@")
	var point = email.lastIndexOf(".")
	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 }
	else { document.newsletter.submit();return true }
}

function verif5(email,msg) {
	var arobase = email.indexOf("@")
	var point = email.lastIndexOf(".")
	
	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 }
	else if(msg=="")
  		{alert('Cet message n\'est pas valide !');
 	 	 document.getElementById("erreur_image_msg").style.visibility="visible";
	   return false }
	   
	else { document.newsletter.submit();return true }	
}

function change_taille(){

  //Créa obj
	var xhr = null;
	if(window.ActiveXObject)
		xhr = new ActiveXObject("Microsoft.XMLHTTP");
	else
		xhr = new XMLHttpRequest();
	
	
	//Recupere les infos du form
	var taille=escape(document.getElementById("pointure").value);
	var type=escape(document.getElementById("type").value);
	var prix=escape(document.getElementById("prix").value);

    //Methode
    xhr.open('POST', 'changer_prix.php', true);

    xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded;charset=ISO-8859-15');
    xhr.onreadystatechange = function() { 
    if(xhr.readyState==4) 
    {
	  document.getElementById('prix').value = xhr.responseText;
      document.getElementById('affiche_prix').innerHTML = xhr.responseText;  }
     }
     
    //Infos send
    xhr.send("prix="+prix+"&taille="+taille+"&type="+type);
	
}