[xwiki-users] javascript onload on a single page

Hi. I have a javascript with an 'onload' which I only want to be loaded on a single certain page. I have achieved this by putting an <script type="text/javascript"> [...] window.onload=someFunction(); [...] </script> on the beginning of the page, on wiki edit mode. However, this doesn't seem very clean to me. Is there a better way to do it? If so, how? regards, Joao