This is an old question, covered in hundreds of FAQs, but a reader asked me this today and I'm nothing if not responsive. (Especially when I know the answer. ;) The question was - how do you open a new window in JavaScript with as little chrome as possible. JavaScript makes this rather simple. The syntax to open a new window is:
foo = window.open(url, varname, features);
Where features is a list of ... well, features. This includes chrome, size, and other options. I found a good list here.
So to answer the question - you can simply disable all the features that are chrome related like so:
<script>
function popup() {
var features = 'directories=no,menubar=no,status=no,titlebar=no,toolbar=no,width=500,height=500';
var mypopup = window.open('http://ray.camdenfamily.com', 'mypopup', features);
}
</script>
<form>
<input type="button" onclick="popup()" value="Click me, baby">
</form>
In my features list I disabled directories, menubar, status, titlebar, and toolbar. Note though that status=no will not work in Firefox or IE7, due to security settings, which is probably a good thing.