get a collection of fonts installed in my machine

[kodo]

Hay,
I write a script to get the whole of installed fonts in my machine. when a execute my script in html page, i get the polices, but in a jsp page i get sometimes an javascript error : not specified error, at the line : for (var loop=0; loop<objet.fonts.count; loop++){.
my method :
<script type="text/javascript">
function getFonts(){
var allFonts = [];
var objet = document.getElementById('objFonts');

for (var loop=0; loop<objet.fonts.count; loop++){
allFonts[loop] = objet.fonts(loop);
}
allFonts.sort();
alert(allFonts.length);
var d=document.getElementById('policesSelectionnables');
alert(allFonts.length);
for(var i=0; i < allFonts.length ; i++){
d.length++;
d.options[d.length-1].text = allFonts[i];
}
}
</script>
my object objFonts :
<object id="objFonts" classid="clsid:3050F819-98B5-11CF-BB82-00AA00BDCE0B" width="0px" height="0px"></object>


and my select :
<html:select name="monForm" property="policesSelectionnables" style="width: 200px" multiple="yes">
</html:select>

any idea about this probleme ?
Thanks.