<iframe id="player" src="..."></iframe>

Firebug - Console tab:

Error: Permission denied to access property 'toString'

I search entire site (Ctrl+F) and "toString" does not exist.
When I remove iframe - Error disappears.

<iframe id="player" src="http://www.youtube./embed..."></iframe>

Firebug - Console tab:

Error: Permission denied to access property 'toString'

I search entire site (Ctrl+F) and "toString" does not exist.
When I remove iframe - Error disappears.

• javascript
• html
• firebug

• Is this error actually affecting the performance of your site? If not, I would ignore it. – Waleed Khan Commented Oct 28, 2012 at 19:06

2 Answers 2

Browser bug that related to the flash player. You can ignore that.

Like the other answers, the bug exists on the page within the iframe. If you're curious as to whats exactly causing the bug... browse to that page within the source and then conduct your search.