firebug: how to cd to an iframe

Question

use one of these commands:

 cd(frames[0]) 
 cd(frames["iframe_canvas"])

and

 cd(top)

to return to the main window.

Still, due to a bug this currently doesn’t work on cross-domain-iframes (http://code.google.com/p/fbug/issues/detail?id=3893). There are two test cases where you can test your evironment for both cases:

https://getfirebug.com/tests/content/commandLine/cd.html
(same domain, works for me: FF 3.6.13, FB 1.6.2)
http://getfirebug.com/tests/issues/3893/issue3893.html
(cross domain, fails)

Another possible source of surprise: if you execute more commands at once the cd command seems to not have an effect for the directly following commands:

 >>> cd(frames[0]); location.href;
 ["Current window:", Window cdFrame.html]
 "https://getfirebug.com/tests/content/commandLine/cd.html"
 >>> location.href
 "https://getfirebug.com/tests/content/commandLine/cdFrame.html"

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