$("#forum-posts-list section.body").each(function() {
var reg = /\[sketchfab]([a-z0-9]{32})\[\/sketchfab\]/g;
if ($(this).html().match(reg)) {
$(this).html($(this).html().replace(reg, '<iframe width="640" height="480" src="https://sketchfab.com/models/$1/embed" frameborder="0" allowvr allowfullscreen mozallowfullscreen="true" webkitallowfullscreen="true" onmousewheel=""></iframe>'));
}
});