iframe and text positioning

I开发者_C百科 have created a small menu of new items and would like to have the "facebook like" iframe position in front of them. but when i drop the html code it appears floating above the text/link. i have uploaded a screen shot

http://img294.imageshack.us/img294/9343/likeoverflow.jpg

you can see the text appearing underneath.

What css am i missing?

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I would say you're missing a background colour on the overlay:

.facebook-like-overlay {
    background-color: #fff;
    /* other css declarations */
}

That will stop the text below from showing through.