村天來了

Corner for jQuery
http://methvin.com/jquery/jq-corner.html

Corner adorners are all the rage in web design these days. Designers say that plain old right-angle corners are so Web 1.0 now. However, some of the techniques to take the edge off corners use extra markup that is only there to support the decoration, which violates the separation of content and presentation. Now that's really Web 1.0 so we don't want to go there. Others use single-purpose rounded corner images or bulky Javascript code; that seems like a high price to pay for beauty.