I think it would be a good idea to make TDC's main background fixed (no scrolling, in CSS this is "background-attachment: fixed;"). I speak for the white background with blue circles
Wow, I completely misread that twice... yeah it does so in FF too, depending on what spec your gfx card is etc Having it tiled is the easiest option really
My motherboard crapped out on me, so I'm on a Radeon 9250 rather then my GeForce 7900, and that alone is enough to lag up the web browser, at least on a resolution that is starting to become standard; 1280x1024.
In other words, the way the background is right now is fine, especially for people who don't have decent graphic cards.
I can't see why people want the background to be fixed anyway. Not because of performance issues, but because I think scrolling backgrounds look and feel better, at least in most cases.
Personally, when I'm on a decent system that doesn't lag, I would much rather a faintly noticeable scrolling background, because they do look better, gives the website more of a parallax feel to it. Performance is why a lot of sites still don't do it though.
i have tested, it's very strange : when i scroll the page with the normal background it uses about 3% of my processor, but when the background is fixed (parallax effect) it increase between 40 and 70% !!! very strange... it's certainly an optimisation problem, because i can't understand how a simple non-moving background can use this amount of processor activity...
Rather than just scrolling through a "static" image.. it has to redraw everything ontop of the background when you scroll, hence why its slower, if that makes any sense whatsoever