Set content for IFRAME in New Window

[noodlegarage]

HELP!

Here's the scenerio:

Page 1 (portfolio.html) contains 20 thumbnail GIFs
Page 2 (masonry.html) contains an iframe

I'd like to program the 20 GIFs so that they all change the URL to masonry.html, however, the html page which opens in the iframe is dependent on what gif the user clicks on. In other words, the GIF controls both the URL and the content of the iframe in the new webpage. Is that possible?

On a single html page, I know how to program a gif so that onClick, it loads a specific html page inside an IFRAME (onclick="frames['contentFrame'].location.href = 'iframes/elizabeth.html'; return false").

However, is there a way to program a gif on html PAGE 1 to open html PAGE 2 and load a specific html page inside the iframe (on Page 2)?

I can program them separately using MM_goToURL and the code pasted above, however, i can't get them to work together.

IF anyone can offer any insight, I would be most grateful.

Thanks in advance.