As expected, the introduction of IE 7 will wreak havoc on those sites that utilize CSS hacks to serve up different styles to IE browsers. The IE development team is urging developers to clean up their hacks. They recommend the use of conditional comments, but I lean to using server-side code to detect and serve browser/platform-specific styles as needed. In PHP I use and heartily recommend phpSniff . Now I need to research some options in JSP…