[SOLVED] JS works in IE7 no prob... FF3 gives error???

[efficacious]

I'm having a issue with a js script that works fine in IE7 and for some reason throws a

 

Error: document.getElementById("HDay") is null

 

Below is my js code:

<script type="text/javascript">

function openday(x)
{
document.getElementById('HDay').value=x;
document.getElementById('Hform').submit();
}
</script>

 

 

html:

<!-- HIDDEN FORM //-->
<form action='schedule.php' method='post' name='Hform'>
<input type='text' name='HDay' value='' />
</form>
<!-- HIDDEN FORM //-->

 

thanks everyone,

eff

[efficacious]

nvrm i figured it out.. FF3 wouldn't except name tag as ID IE does..