window.content warning message from Firefox

a warning message from firefox

[xbl01234]

Hello;
I am using the latest version of Firefox, but some time it give me a massage as following;

typeerror: window.content has no properties

Could anyone tell me why? Thanks

[tedster]

Sounds like a javascript error - would that make sense?

[cmarshall]

It's definitely (as Tedster mentioned) a JavaScript error. This error usually happens when you try to access object properties or functions when the object reference is null, or the object property/function doesn't exist.

Someone probably tried to get fancy, and didn't notice that content is not a valid window property [docs.sun.com].

It's probably related only certain sites, and those sites will give you the same error on other browsers.

[xbl01234]

Yes, that's right.It happens to my IE browser too.
I think you are both right, the problem comes from their javascript code of their website.

Thanks for your response.