function montrenews(id) {
 var d = document.getElementById(id);
  for (var i = 1; i<=10; i++) {
  
 if (document.getElementById('newsletter'+i)) {document.getElementById('newsletter'+i).style.display='none'; document.getElementById('newsletter'+i).id='newsletter1'; }
	}
if (d) {d.style.display='block'; d.id='newsletter2';}
 }