Chromeless Window Popup (Image Map)

Good day.
I checked the search but couldn’t find exactly what I was looking for.

I need to make one of these “chromeless” popups, except I’d like it to come from an image map from a picture, as opposed to a basic text link. From what I’ve read, I need to use some java scripting, but I don’t know how to integrate that into the image map link.
Hopefully someone can help me. Please show me how to insert the code, if you have one for me, because I’ve never used Java before.

I’m using Dreamweaver.

Here’s the code so far.

<html>
<head>
<title>Obey Propaganda Promotion Services.</title>
<meta http-equiv=“Content-Type” content=“text/html; charset=iso-8859-1”>
</head>
<body bgcolor="#FFFFFF" text="#000000">
<p> </p>
<p><img src=“rex.gif” width=“815” height=“512”></p>
<p><img src=“Obeyint.GIF” width=“815” height=“251” usemap="#Map" border=“0”>
<map name=“Map”>
<area shape=“rect” coords=“18,25,179,48” href=“about.htm”>
</map>
</p>
</body>
</html>

The image being mapped is obeyint.gif and the file to appear in the window is about.htm. Just thought I’d explain that thoroughly.

Thanks.