Can't access IFRAME in FireFox

Hi Guys,

I have a javascript code that tries to access form value in an IFRAME

the following code works perefectly in both IE and OPERA but FireFox always give me this error message:

"window.daftar.formku is undefined"

I have also tried

alert(window.frames[1].formku.email.value);

but it doesn't work too

I always get ""window.daftar.formku is undefined"

Where did I make mistake? Thanks


Code In Parent Frame
====================


<script language="javascript">
function mailChimp() {


alert(window.daftar.formku.email.value);
}

</script>



Code In the IFrame , iframe name="daftar"
==========================================

<!-- Begin MailChimp Signup Form -->
<link href="http://cdn-images.mailchimp.com/embedcode/slim-081011.css" rel="stylesheet" type="text/css">
<style type="text/css">
#mc_embed_signup{background:#fff; clear:left; font:14px Helvetica,Arial,sans-serif; }
<!-- Add your own MailChimp form style overrides in your site stylesheet or in here. -->
</style>
<div id="mc_embed_signup">
<form action="http://seocomrade.us2.list-manage.com/subscribe/post?u=708dca3d5b07fe3c83daf6c8e&amp;id=f927596ad1" method="post" id="mc-embedded-subscribe-form" name="mc-embedded-subscribe-form" class="validate" target="_blank">
<label for="mce-EMAIL">Subscribe to our mailing list</label>
<input type="email" value="myworld@myworld.com" name="email" class="email" id="mce-EMAIL" placeholder="email address" required>
<div class="clear"><input type="submit" value="Subscribe" name="subscribe" id="mc-embedded-subscribe" class="button"></div>
</form>
</div>

<!--End mc_embed_signup-->

 

Maybe this will help there is a bit about forms using JS and iFrames

http://developer.apple.com/internet/webcontent/iframe.html

 

you cannot access an iframe if it's domain is different than your site's domain.. on the other way around an iframe can't control a parent window if their domains are diffrerent.