$(document).ready(function() {

    // Defines what to post to the php script
    $('form[name=login]').submit(function(){
        var action = $('#login_form').attr('action');
        var loginData = {
            username: $('#username').val(),
            password: $('#password').val(),
            loginPost: 1
        };

    // Checks if information entered is correct
    $.ajax({
        type: "POST",
        url: action,
        data: loginData,
        success: function(response)
        {
            // If information is correct, then fade in success site
            if(response == 'success')
                $('#login_success').show();
            // If information is not correct, then show error message
            else
                $('#login_error').show();
        }
        });
        return false;
    });
});