iframe problem in HTML5

[Burgin]

I've been using this code to give me 3 image links that change the pages being displayed in an <iframe name="a-comments"> and they worked fine.
I've tried using them in a HTML5 test and changed it to <iframe id="a-comments"> in order to validate the code and they work great in Chrome but Firefox and IE8 open the links in a new tab. Any ideas whats going on?
The code...

<a href="media/mad-mountainbikes.htm" target="a-comments" title="Photos &amp; Films (Default)"><img src="../img/icon-med.png" width="30" height="30" alt="media"></a>&nbsp;
<a href="../reviews/mad-mountainbikes-reviews.php" target="a-comments" title="Reviews"><img src="../img/icon-rev.png" width="35" height="29" alt="reviews"></a>&nbsp;
<a href="social/mad-mountainbikes.htm" target="a-comments" title="Social Media"><img src="../img/icon-soc.png" width="30" height="30" alt="social"></a>

[traq]

the name on iframes is still valid in html5. Always double-check validator errors in html5 mode (it's still experimental).

[Burgin]

Thanks traq

I also had to remove a few meta tags I liked to use, could they possibly be valid? Whats a good way to double check?

[traq]

if you can follow it, the w3c spec (which I liked to above) is best.

however, a better approach is to rely on what works as opposed to what is technically valid - many parts of html5 aren't supported - or not widely supported - yet.

could you post the <meta> tags in question?

[Burgin]

Here they are...

<meta name="distribution" content="global" />
<meta name="copyright" content="Cherrys MOT Centre" />
<meta name="owner" content="Cherrys MOT Centre" />

[traq]

huh... I didn't realize, but it seems that html5 defines valid meta tag names. You can also propose your own.

on the other hand, just because these are "invalid" doesn't mean you can't use them. They will simply be ignored - but guess what, current browsers ignore them anyway. I'd say, leave them in if you prefer.

[JShor]

I didn't know you could do that in HTML5 either. Interesting.