Portfolio-Lightbox-Content w PDF

This portfolio item is a lightbox item made using an embed code as follows:

<embed src="http://strikingsupport.com/SC.pdf" width="860" height="1100">

which embeds fine in the page, but does not work in IE10 in the portfolio list when using the Lightbox Content field.  Can you please test in Safari on imac/macbook.  Works fine in ipad.