function subscribe(){
	$(function(){
		var email = $("#email").attr('value');
			$.ajax({
				type:"POST",
				url: '/discovery/add_subscriber',
				data: 'email='+email,
				dataType: "html",
					success: function(responseText){
						var newcontent = '<div class="sendtofriend">Thank you for your patience.</div>';
						$(".signup-box").replaceWith(newcontent);
					}
				});
	});
}

function checkEnter(e) {
	var characterCode

	if(e && e.which){
		e = e
		characterCode = e.which
	}
	else{
		e = event
		characterCode = e.keyCode
	}
	if(characterCode == 13){
		var email = $("#email").attr('value');
		if(isValidEmail(email)){
			subscribe();
			return false			
		} else {
			throw_error();
		}
	}
	else{
		return true
	}
}

function isValidEmail(str){
   return (str.indexOf("@") > 0);
}

function throw_error(){
	alert('error')
	//$("#email").addClass('error');
	//$("#email").toggle("shake",{distance:3,times:3},50);
}