ferranb You should turn off the editor in Global Configuration in backend of your site, then add the script to the module content.
<script>
jQuery("#hero-wrap").parallaxmouse({
invert: true,
range: 240,
elms: [
{el: jQuery('#decor-3'), rate: 0.1},
{el: jQuery('#decor-6'), rate: 0.05},
{el: jQuery('#decor-1'), rate: 0.4},
{el: jQuery('#decor-5'), rate: 0.15},
{el: jQuery('#decor-2'), rate: 0.3},
{el: jQuery('#decor-4'), rate: 0.2},
]
});
</script>