I’ve updated the design of my blog with some CSS-tweaks and a background-image. The Photoshop-work took one week until I was satisfied. Finally, I ended up with lots of details and a red gradient in the background.
In order to achieve a nice effect, I planned to set the CSS-background-attachment to “fixed” so that the background-image would lie “behind”. I’ve tested the page in many browsers (Firefox 2, Internet Explorer 6/7, Opera, Safari) and everything worked fine. But when I viewed the website in Firefox 3 (RC3) I discoverded that the page scrolled extremely slow. I sized the browser-window down and the scrolling-behavior was alright (not perfect but acceptable). After setting the CSS-background-attachment to “scroll”, the scrolling was normal again. So it seems that Firefox 3 lacks performance when a background-image is fixed and the browser-window is maximized.
I crawled the web and finally I found the discussion on mozillaZine. The bug was discovered on other websites and it may be fixed in Firefox 3.0.1.
Until the bug gets fixed, I’ll wait with “background-attachment:scroll”.