function switch_embeddown() {
document.getElementById('embed2').style.display = 'block';
document.getElementById('embed1').style.display = 'none';
}

function switch_embedup() {
document.getElementById('embed2').style.display = 'none';
document.getElementById('embed1').style.display = 'block';
}

function switch_frienddown() {
document.getElementById('top_step2_hidden').style.display = 'block';
document.getElementById('send_more').style.display = 'none';
document.getElementById('main_top').style.marginBottom = '-180px';
document.getElementById('pro_hidden').style.display = 'none';
}

function switch_prodown() {
document.getElementById('pro_hidden').style.display = 'block';
document.getElementById("main_top").style.marginBottom = '-100px';
document.getElementById('top_step2_hidden').style.display = 'none';
document.getElementById('send_more').style.display = '';
}

function switch_customizedown() {
document.getElementById('customize2').style.display = 'block';
document.getElementById('customize1').style.display = 'none';
document.getElementById('bottom_step3').style.height = '300px';
document.getElementById('submit').style.height = '85px';
}

function switch_customizeup() {
document.getElementById('customize2').style.display = 'none';
document.getElementById('customize1').style.display = 'block';
document.getElementById('bottom_step3').style.height = '150px';
document.getElementById('submit').style.height = '215px';
}