How to open an element, such as a picture, in an iframe on a Google Books webpage (or the iframe itself), in a new tab?

Question

Google Books pages seem to have a resistance against opening the content of their iframe in a new window or tab. Right-clicking in the iframe, or particularly on a picture in the iframe, does not work. It will not allow it.

Is there a workaround to this?

I am using Opera but I suppose this is something involving all browsers.

Example - this URL and you scroll a bit up to page 33 to see a picture.

Answer 1

This is accomplished with the CSS rule

user-select: none;

Note that Opera uses "-webkit-user-select" because this CSS is still experimental.

Extensions like RightToClick on Firefox override this. A userscript that overrides this CSS rule would also work.