Over the years I have been able to find all of my Xara answers already posted on this forum. Can't find one for this though.

I have a webpage with thumbnail photos set to pop-up and show in the center of the page. Also have an embedded Youtube video on this page. When a thumbnail is clicked and the pop-up appears, the embedded Youtube iframe is in front of the pop-up image. This only happens in Safari and Explorer. Any ideas?