netscape neemt code niet, explorer wel???

[Ludoviek]

iemand een idee waarom dit proefformuliertje wel met explorer en niet met netscape kan worden verstuurd?

<DIV ID="C0" TITLE=""><LAYER NAME="C0m" WIDTH="53"><DIV ID="C0m"><FORM onSubmit="return false" NAME="FORMC0"><INPUT TYPE=CHECKBOX ID="C0check" NAME="keuzevak1" VALUE="on"> <SPAN ></SPAN></FORM></DIV></LAYER></DIV>
<DIV ID="B1" TITLE=""><FORM onSubmit="submitForm();return false"><INPUT TYPE=SUBMIT ID="B1text" NAME="B1text" VALUE="Verzend" onMouseOver=""></FORM></DIV>
<FORM ACTION="http://www.mysitehome.com/mhbin/mail.cgi" METHOD="post" NAME="finalform" onSubmit="return checkValues('')"><INPUT TYPE=HIDDEN NAME="nextpage" VALUE="http://www.bipe.be"><INPUT TYPE=HIDDEN NAME="subject" VALUE="Essayeersel"><INPUT TYPE=HIDDEN NAME="to" VALUE="info@bipe.be">
<INPUT TYPE=HIDDEN DNL NAME="keuzevak1">
</FORM>