The HTML5 spec allows [form-associated elements](http://dev.w3.org/html5/spec/forms.html#form-associated-element) to refer to their [associated `<form>` element](http://dev.w3.org/html5/spec/association-of-controls-and-forms.html#attr-fae-form) via the `[form]` attribute. Do any browsers support this natively?
['https://Stackoverflow.com/questions/10143140', 'https://Stackoverflow.com', 'https://Stackoverflow.com/users/497418/']
See:

* <http://www.impressivewebs.com/html5-form-attribute/>
* <http://swatelier.info/at/forms/HTML5attrib.asp>

The `form` attribute is supported since Firefox 4, Opera 9.5, Safari 5.1 and Chrome 10, but not on IE yet.

Here's a test page:

<http://www.impressivewebs.com/demo-files/html5-form-attribute/>
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> Opera 9.5+, Safari 5.1+, Firefox 4+, Chrome 10+
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> 
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