$(function() {
    $('#button-conf').on('click', function(){ // When the button has pressed
        window.addEventListener("message", (event) => { // Verify a Json sended
            if (event.data.type == "ui") { // Verify type of NUI
                $('#container').hide(); // Hide the #content - div had the all site
                $.post('http://nui/enviar', JSON.stringify({ // post with http://YOUR_RESOURCE_NAME/YOUR_EVENT_NAME
                    type: "ui", // type of NUI
                    display: false}) // Set display for false - hide him
                );
            }
        })
    })
})