Add html code into Momentum captions?

Hi,

I just want to know if anyone has a work around to add a small snipet of code into the captions for the Momentum template. Essentially I want a text link from within the captions to open a jpeg in a lightbox.

I have setup the jquery for the lightbox (using fancybox) and code to be able to do this and it works fine from both the code block and the text block (using the option right click method to access the html).

Is there a way to access the html in the captions, similar to the option right click method for text boxes?

Thanks, Aaron