Does data:image behave differently for Firefox/Opera?

Question

I have used the data:image URI to set the source of an image tag.

By default, the CSS display property is none. When I get the image from the user, I change the source on this tag and it shows the image:

<img src="data:image/gif;base64:............" />

My questions are:

1. Even though the display is none, I suspect the browser is still fetching the image. Am I right?

While fetching the browser should hit my server with relative URL. But sometimes it appends the source URI data to my absolute URL.... ONLY sometimes!!

/my-context/data:image/gif;base64....

2. Is this behavior expected? Is it browser specific? I am seeing the requests from Firefox 5.0 and below and Opera 10.0 and below causing this problem.

Answer 1

1. Yes.
2. This is not expected in a stock Firefox install. Can you link to the page that shows the problem?