$(function() {

    $("#input_email").click(function() {
    
        var hasError = false;

        if ($("#email").val() != "") {
            var email = document.getElementById('email');
            if (email != null) {
                var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
                if (!filter.test(email.value)) {
                    hasError = true;
                    $("#email").addClass("error");
                    document.getElementById('email_error_emailsignup').innerHTML = "Please Enter a Valid Email Address";
                    $("#email_error_emailsignup").removeClass("displaynone");
                    $("#email_error_emailsignup").addClass("displayblock_emailsignup");
                }
            }
        }       

        if ($("#email").val() == "") {
            hasError = true;
            $("#email").addClass("error");
            document.getElementById('email_error_emailsignup').innerHTML = "Email Required";
            $("#email_error_emailsignup").removeClass("displaynone");
            $("#email_error_emailsignup").addClass("displayblock_emailsignup");
        }

        if (hasError) {
            return false;
        }
        
    });
});