Below is a link to some instructions on one way to do this using jQuery Colorbox:
http://www.primecut.gr/2011/06/colorbox-with-google-maps/
Here are some simple codes. This requires jQuery and the Colorbox plugin (JavaScript and CSS).
HTML
<a class="googleMapPopUp" href="https://maps.google.com.au/maps?q=south+australia" target="_blank"> View location map </a>
Javascript
$('.googleMapPopUp').each(function() { var thisPopup = $(this); thisPopup.colorbox({ iframe: true, innerWidth: 400, innerHeight: 300, opacity: 0.7, href: thisPopup.attr('href') + '&ie=UTF8&t=h&output=embed' }); });
Demo
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