Opera 6 ignores Background Images on Inline Elements

Here is an <a> and an <address> element styled with CSS' background-image property. The first one is an inline element by default, the second one is a block element. Opera 6 does not display the background image for the inline element:

With display: block;

If <a> becomes a block element, Opera 6 shows the background image, but that's not what we wanted:

With display: inline;

Even the <address> element lost it's background image if we make it an inline element:

Even float: ...; confuses Opera 6

Opera 6 shows "AnchorParagraph Paragraph" here. IE5 and Mozilla show "Paragraph Paragraph [new line] Anchor".

Paragraph Anchor Paragraph