radio button check problem i NS

Hej!
Jeg har en radiobutton check som fungerer perfekt i IE, men den reagerer slet ikke i NS?? Hvad kan jeg gøre?
mvh erik

<%response.buffer=true%>
<!--#include file=\"../newsincntest.asp\"-->
<script language=\"javascript\">
function subForm()
{
    if(!fieldcheck())
    {
        newsform.headlines.focus();
        newsform.content.select();
        return false;
    }
    else
    {
        document.newsform.submit();
    }
}
function fieldcheck()
{
    if (document.newsform.headlines.value == \"\")
    {
        alert(\"Plese write headline\");
        document.newsform.headlines.focus();
        return false;
    }
    if (document.newsform.content.value == \"\")
    {
    alert(\"Please write some content\");
        document.newsform.content.focus();
        return false;
    }
if(radiobuttoncheck())

        return true;
}
function radiobuttoncheck() {
  for (i=0; i<newsform.category.length; i++) {
    if (newsform.category[i].checked) {
      return true;
    }
  }
  alert(\"Please choose a category\");
  return false;
}

function focuson()
{
    document.formen.name.focus();
}
function selectall()
{
    document.formen.body.select();
}
function closew()
{
window.close();
}
</script>
<%
strCreatedate=(datediff(\"d\",\"01-01-1999\",now))
dato=(dateadd(\"d\",\"600\",\"01-01-1999\"))
strCategory = request.form(\"category\")
set iNews = new clsNews
strHeadlines = TRIM(request(\"headlines\"))
strRaw = request(\"content\")
rplc = replace(strRaw, vbcrlf, \"<br>\")
strContent = rplc

if strHeadlines <> \"\" AND strContent <> \"\" THEN
    iNews.InsertNews strHeadlines, strContent, strCreatedate, strCategory
end if
%>
<html><head>    <title>Insert</title></head><body>
<TABLE border=0>
  <FORM action=\"indtast.asp\" method=\"post\" name=\"newsform\">
  <TBODY>
  <TR>
    <TD vAlign=top>Headlines:</TD>
    <TD><INPUT name=\"headlines\" size=\"40\">
      <P></P></TD></TR>
  <TR>
    <TD vAlign=top>Content:</TD>
    <TD><TEXTAREA cols=\"31\" name=\"content\" rows=\"16\"></TEXTAREA></TD></TR>
  <TR>
    <TD>
    <TD><INPUT name=\"category\" type=\"radio\" value=\"ProductNews\">Product news<INPUT name=\"category\" type=\"radio\" value=\"IndustryNews\">Industry news</TD>
    </TD></TR>
  <TR>
    <TD><INPUT name=\"knap\" onclick=\"subForm();\" type=\"button\" value=\"Add news\">
<INPUT name=\"knap\" onclick=\"closew();\" type=\"button\" value=\"Close\">
  </FORM></TD></TR></TBODY></TABLE>
</body></html>