function show() {
    var floatContact = document.getElementById('float-contact');
    var floatContactMini = document.getElementById('float-contact-mini');
    if (floatContact.style.display == "none") {
        floatContact.style.display = "block";
        floatContactMini.style.display = "none";
    } else {
        floatContact.style.display = "none";
        floatContactMini.style.display = "block";
    }
}
