$().ready(function () {
	//assign event handler
	$("#emailSubmit").click(function() { 
 	  validateEmail();
	});
});

//function
function validateEmail () { 
	var email = document.getElementById("form_email").value;
	if(email.match("@")) {
		//alert('match');
		//submit
		 $.post("email.php", { email: email },
  			function(data){
  			  if(data.match("problem")) { subscriptionNotify("fail"); }
   			  else { subscriptionNotify("no"); }
  			});
			
    }
      else {
      //alert('no match');
      subscriptionNotify("invalid");
      }

}