Check divs is over other divs and trigger :hover selector

I have some div over other divs. They have the same parent div in absolute position.

All divs have different z-index.

I need detect all the divs that are below the div that you over with the mouse using jQuery and trigger the :hover effect. Something like "collision".

<div style="position: absolute;">
<div class="some-size animation1" style="z-index: 20;"></div>
<div class="some-size animation2" style="z-index: 19;"></div>
<div class="some-size animation3" style="z-index: 18;"></div>
...
</div>

JsFiddle

Thanks!!