Images open Behind Video with Tinymce

Im using the Tinymce Thumbnail Gallery Plugin on a blog.

When the thumbnail is clicked to open image to full size, the image is Opening Under other items on page. In this case they are opening under embed videos on the page.
This is happening in Chrome, not so much in firefox.

Here is a link to the site, ohhdamn.com, site is currently a mess as trying to get stuff working before making it look ok.
There is only 3 thumbnails, click on one and you will see what I mean.

Any suggestions on how to get the images to open upfront/on top?

Thanks in advance for any help.