$(document).ready(function() {
    // validate signup form on keyup and submit
    var validator = $("#signupform").validate({
    
        rules: {
            fname: "required",
            lname: "required",
            email: {
                required: true,
                email: true,
                remote: "emails.php"                
            }
            
        },
        messages: {
            fname: " ",
            lname: " ",
            email: {
                required: " ",
                minlength: " ",
                email: " ",
                remote: jQuery.format("{0} is already in use")
            }
            
        },
        // set this class to error-labels to indicate valid fields
        success: function(label) {
            // set   as text for IE
            label.html(" ").addClass("checked");
        }
    });
});