show current filename

[mikecracker]

I want to make use of the filename of the document,
and thus need to use javascript to retrieve the filename.

However I tried "location" but it gives me the full URL of the current location, not the filename of it.

for example:
http://www.server.com/directory/filename.html
I just need to retrieve the part "filename.html"
what should I do?

any javascript codes can do that for me?

[fredmv]

<script type="text/javascript">
//<![CDATA[
var url = 'http://www.server.com/directory/filename.html';
alert((url.substring( url.lastIndexOf('/') + 1), url.length));
//]]>
</script>