//optin validation code 

rei.Document.ready(function(){
  
  function emailValid(elementValue){ 
    var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;  
    return emailPattern.test(elementValue);  
  }
    
  rei.select({'tag':'input','name':'email'}).each(function(el){    
    rei(el.origin.form).on('submit',function(e){
      if (this.origin.email.value==''){        
        alert('Please enter your email');
        this.origin.email.focus();
        e.halt();
      }
      else if (!emailValid(this.origin.email.value)){
        alert('Sorry, please enter valid email!');
        this.origin.email.focus();
        e.halt();
      }
    });

  });
});