function sendFrends() {
    
	if($F('name') == "" || $F('name') == "Votre nom") {
	
	    $('name').addClassName('error');

	} else {
	    
	    $('name').removeClassName('error');
      
  	}
	if(($F('firstname') == "" || $F('firstname') == "Votre prénom")){

	    $('firstname').addClassName('error');

	} else {
	    
	    $('firstname').removeClassName('error');

        }
	
	var reEmail = /^[\w!#$%&'*+\/=?^`{|}~-]+(\.[\w!#$%&'*+\/=?^`{|}~-]+)*@(([\w-]+\.)+[A-Za-z]{2,6}|\[\d{1,3}(\.\d{1,3}){3}\])$/;

 	if(!reEmail.test(trim($F('emailFriend'))) || $F('emailFriend') == "" || $F('emailFriend') == "Votre email") {
	
	     $('emailFriend').addClassName('error');

	} else {
	    
	    $('emailFriend').removeClassName('error');
	    
	}
	if($F('emailfriends') == "" || $F('emailfriends') == "Emails séparés par ;"){ 
	
	     $('emailfriends').addClassName('error');

	} else {
	    
	    $('emailfriends').removeClassName('error');
	    
	}
	if($F('msgSup') == "" || $F('msgSup') == "Votre message"){
	  
	   $('msgSup').addClassName('error');

	} else {
	    
	    $('msgSup').removeClassName('error');
	    
	}
    
    if(($F('name') != "" && $F('name') != "Votre nom") &&
	(($F('firstname') != "" && $F('firstname') != "Votre prénom")) &&
	(reEmail.test(trim($F('emailFriend'))) && $F('emailFriend') != "" && $F('emailFriend') != "Votre email") &&
	($F('emailfriends') != "" && $F('emailfriends') != "Emails séparés par ;") &&
	($F('msgSup') != "" && $F('msgSup') != "Votre message") &&
    ($F('url') != "")&&
    ($F('typePage') != "")){

	 var params = 'name=' + $F('name') + '&firstname=' + $F('firstname') + '&emailFriend=' + $F('emailFriend') + '&emailfriends=' + $F('emailfriends') + '&msgSup=' + $F('msgSup') + '&url=' + $F('url') + '&typePage=' + $F('typePage') ;

	    new Ajax.Request('/ajax/mailFrend.ajax.php',
	    {
		asynchronous:true,
		method: 'post',
		parameters: params,

		onSuccess: function(t){

		      Form.reset('envoiAmiForm');
		      closeLayer('formSendFriend');
		      alert(t.responseText);
		},

		onFailure: function(){

		       alert("Error !");

		}
	   })
       }
}
document.observe('dom:loaded', function(){
        $$('input.validButton').each(function(el){
                Event.observe(el, 'click', function(ev){
                Event.stop(ev);
                sendFrends(el);
                });
        });
});