$(function(){
   $('#signup').submit(function() {
   
   		$(this).find('.error').remove();
   
   		var email = $('#email').val();
   		var valid = (/^([a-zA-Z0-9'_\.\-\+])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/i).test(email);
   		
   		if(valid){  
		    $(this).ajaxSubmit();
			$('#signup').hide().after('<p class="success">Thanks, Check Your Inbox!</p>');
		}else{
			$('#signup').append('<p class="error">Please enter a valid email address</p>');
		}
		return false;
    });
});