function chgclass(nomFormulaire, nomChamp, nomClass, nomclassHover) {
	var n = window.document.forms[nomFormulaire];
	if(n.elements[nomChamp].className == nomClass) {
		n.elements[nomChamp].className = nomclassHover;
	} else {
		n.elements[nomChamp].className = nomClass;
	}
}
function ajax(url,variable,valeur)
{ 
    var xhr; 
    try {  xhr = new ActiveXObject('Msxml2.XMLHTTP');   }
    catch (e) 
    {
        try {   xhr = new ActiveXObject('Microsoft.XMLHTTP');    }
        catch (e2) 
        {
          try {  xhr = new XMLHttpRequest();     }
          catch (e3) {  xhr = false;   }
        }
     }
 
    xhr.onreadystatechange  = function()
    { 
         if(xhr.readyState  == 4)
         {
              if(xhr.status  == 200) 
                 alert(xhr.responseText); 
              else 
                 alert(xhr.status);
         }
    }; 

   xhr.open( "GET", url+"&"+variable+"="+valeur,  true); 
   xhr.send(null); 
} 
function newsletter(val,lang)
{
	ajax("/newsletter.php?lang="+lang,'email',val);
	return false;
}