<div class="parallax" style="height: 100%;">
  <div data-depth="0.4" data-position="center" data-size="cover" style="background-image: url(assets/media/bg-1.jpg)"></div>
  <div data-depth="0.6" data-position="center" data-size="cover" style="background-image: url(assets/media/bg-2.png)"></div>
</div>

CyzerParallaxInit('.parallax');