If you look at it in Firefox, you’ll see a border as well, but with the colors of your current “Anchor tag” highlighting instead of purple. Both engines make the assumption that if it’s a link, then some sort of boarder is necessary…just a default philosophy of rendering I guess. The bottom line is that if you have an image that you want to be a link, you need to make sure that your images are styled without borders or that links (anchors) are styled without borders.
If you look at it in Firefox, you’ll see a border as well, but with the colors of your current “Anchor tag” highlighting instead of purple. Both engines make the assumption that if it’s a link, then some sort of boarder is necessary…just a default philosophy of rendering I guess. The bottom line is that if you have an image that you want to be a link, you need to make sure that your images are styled without borders or that links (anchors) are styled without borders.