Getting the input file name

Hi,

I would like to use external javascript which has the same name as the XML input file name whatever it is.

If I have an input file name of "input.xml", For example, the javascript file name used inside of XSLT must be "input.js"
<script xlink:href="input.js" type="text/ecmascript"/>

How can I get and use the input file hame with the XSLT?

Thanks