How to make user login responsive

nav_userlogin.js

//Make file called nav_users.js and put this in there somewhere. Then reference nav_users from main.js

document.getElementById('usersubmit').addEventListener('click', function (e) {
    e = e || window.event;
 
    $user = document.getElementById('user_css_id').value;
    $pass = document.getElementById('pass_css_id').value;
    $pass = document.getElementById('email_css_id').value;
 
    tryLogin($user,$pass,$email);
 
}, false);

//Then go to main.js and make a var & function
//Near the top:
var addUser;


//Then later down, inside function RSimulate(opts) {}

    addUser = function ($user, $pass $email) {
        // NOTE: send ephemeris without a name; the server will assign one
        var cmd = 'create';
        var credentials = {
            user: $user;
            pass: $user;
            email: $email;
        };
        var data = {cmd: cmd, user:...........};
        var stringify = JSON.stringify(data).replace(/\"+/g, "\'");
        console.log("Creating new User");
        //You need to figure out what goes in here:
        ws.send(message('playerLogin', "{'cmd': 'pObjCreate', 'objectId': None, 'type': 'Probe', " +
            "'model': 'Magellan', 'data': "+stringify+'}'));
    };