DOJO Dialog Box -- Why isn't the dialog box showing?

I am wondering why my DOJO Dialog box cannot appear in Firefox but can appear in IE and Google Chrome.

With

dialog5.show();

I thought my dialog box will automatically show in browser ? It is the case for IE and Google Chrome but not for firefox

How come ?

The examples page for dojo works fine in Firefox:
dijit/Dialog - DojoCampus - Docs

Perhaps you have some conflict with existing CSS on your page? It’s hard to tell with such little information.

this is bad. i can’t figure out the problem

Well the good thing about code is that there is always an explanation for every problem even if it isn’t immediately obvious. Can you provide more information, perhaps a link to an example page so people can see the issue? The more information you give the more likely you are to get a response.

i am using Firefox 5.0