close window function

i'm using the open window function in dreamweaver, to show additional info and I want to use a link in the window to close itself, but I can't seem to find out how. I have "close window" in html but can't find the right code to make it work.

can someone help:confused:

<a href="javascript:parent.close()">close window</a>
or
<a href="javascript:self.close()">close window</a>

Either will work.