bgiframe does not work on FireFox

I have a problem when display a jquery dialog over an applet image viewer (or ActiveX image viewer) (the size of applet larger than jquery dialog)

$("#dialogDiv").dialog({
                ...
                ,bgiframe:true
                });

In IE, it work fine (didn't tested on IE 6),but not work on FireFox So, i'm tricked by disable the bgiframe option in $ dialog and manually create an iframe by

 $("#dialogDiv").bgiframe({ top: 0, left: 0, width: 400, height: 200 })

The iframe is created successfully in IE8, but not in FireFox (v3.6.12).

I used this script: jquery.bgif开发者_JS百科rame.min.js

Please help me to find out the root cause.

Thanks,

I've never had to use this plugin, but looking at their documentation it says it only applies to IE6.

http://brandonaaron.net/code/bgiframe/docs/

Can you explain a little better what are you trying to achieve? Maybe you don't need bgiframe