2 instances on 1 page, 2nd does not load in FireFox

2 instances on 1 page, 2nd does not load in FireFox

Hi, I have a page with two instances of FCK editor loaded using the Javascript method. These are loaded into a popup lightbox which is essentially an iframe.

The problem is that the first FCK instance works fine, but the second does not load - I just get a blank screen where the text area should be, and I have Firebug installed in the browser and it gives no errors. If I right click on the page and reload the iframe it appears.

FCK editor 2.6.6, FF11/WinXP, lightbox is this one- highslide.com.

Calling FCK via:

<script type="text/javascript">
var oFCKeditor = new FCKeditor('free_text_1');
oFCKeditor.BasePath = "/admin/fckeditor/";
oFCKeditor.Value="test 1</p>";
oFCKeditor.Create();
</script>

and

<script type="text/javascript">
var oFCKeditor = new FCKeditor('free_text_2');
oFCKeditor.BasePath = "/admin/fckeditor/";
oFCKeditor.Value="test 2</p>";
oFCKeditor.Create();
</script>

I tried making 'oFCKeditor' an unique name on the second instance, but no difference. This setup has been working for 2 years and just failed recently, I wonder if there is some interaction with FF11 that was not there in previous versions.

Thanks in advance for any help,

Kevin