function CheckSubscribe(f){
 if(f.email.value==''){
      alert("Вы не указали email");//
      f.email.focus();
      return false; 
   }
   return true;
}

 function CheckSpecial(){
 if(document.getElementById("nl_cre").checked==true || document.getElementById("nl_cre_weekly").checked==true || document.getElementById("nl_awards").checked==true || document.getElementById("nl_afisha").checked==true || document.getElementById("nl_crenews").checked==true){
  document.getElementById("agreement").style.display = "block";
  if(document.getElementById("nl_cre").checked==true || document.getElementById("nl_cre_weekly").checked==true || document.getElementById("nl_afisha").checked==true ){ document.getElementById("nl_special_offer").checked = true};

 }
 if(document.getElementById("nl_cre").checked==false && document.getElementById("nl_cre_weekly").checked==false && document.getElementById("nl_awards").checked==false && document.getElementById("nl_afisha").checked==false && document.getElementById("nl_crenews").checked==false){
  document.getElementById("agreement").style.display = "none";
  document.getElementById("nl_special_offer").checked = false;
 } 
}

if(document.getElementById("nl_cre").checked==true || document.getElementById("nl_cre_weekly").checked==true || document.getElementById("nl_awards").checked==true || document.getElementById("nl_afisha").checked==true || document.getElementById("nl_crenews").checked==true){
document.getElementById("agreement").style.display = "block";
}