So you're all grown up and want Rounded Corners on your site. There's just one small problem: the normal rounded corners implementation comes with tons of divs used for styles and you've got your fellow web developers screaming down your neck about web semantics.
So what's this funky semantics thing? Basically, we're looking for a separation of styles and data. We want to keep all the styles in the CSS style sheets and all the data in the XHTML files. Now, I've been known to be flexible on this a bit, however it is a great idea with a purpose and in this case, it actually helps us out a ton.
Ignore Me - Take The Easy Way Out
There are two jQuery plugins that can do this instantly, aptly named jQuery Corners and jQuery Corner. Yeah, I know totally different, right? They vary slightly in terms of their capabilities (anti-aliasing, background images, etc.). So if you're not up to the heavy lifting or your requirements are very light (just basic rounding) these plugins more than fit the bill.