Hi Suman,
Thanks for the link to the Xcelcius SP3 Pam.
I tried to also download the PAM for XCelscius 2008 SP5 but couldn't as it required a password for some reason. Any chance you could get it for me?
To answer your questions, the version of my Firefox is 29.0.1 and user Agent is Mozilla/5.0
The PAM you provided for SP3 stated support for Mozilla Firefox 3.0 (maybe this could be a problem?)
Having said that, my XCelcius flash object is displayed properly in Firefox and it runs properly in terms of functionality (e.g. updating charts, slider controls all work etc) . Where it fails is when my javascript attempts to call any of the External Interface data Connection methods. Example: getDataSource(rangename)
This same thing works great in IE.
Here is an interesting link to an example of someone who did use a Firefox browser and apparently successfully ran EIC methods to get data in and out of their two XCelcius flash modules. (This is pretty much the same thing that I am doing too.)
http://commxcelsiusdash.blogspot.com.au/2011/09/xcelsius-dashboard-communication.html
Also, I have tried referencing the swf module in different ways depending upon your browser ( using this really helpful article) http://www.permadi.com/tutorial/flashjscommand/