ciao, non riesco a far aprire questa finestra popup, dove sbaglio?

grazie..

codice:
<script language="JavaScript" type="text/JavaScript">
<!--
function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
  return false;
}
//-->
</script>
Codice PHP:
echo '<div style="border:1px solid #EBEBEB; margin-right:10px; margin-bottom:10px; padding:5px; width:auto; display:block; float:left;">[url="#"][img]image.php?file='.$file.'&width=200&height=60[/img][/url]</div>';