Similar to Google, it provides the user with feedback of how strong their password is.
There are many other ways to create rounded corners – some involving no images whatsoever. On the jQuery site there’s a plugin for making rounded corners without images. It’s not for everyone (or every application) but worth checking out. Don’t ask me to break down the code because it’s pretty intense and chok full of [...]
As a matter of usability and aesthetics, it is a good thing to add some kind of visual feedback on web forms to indicate the currently active (or “focused“) field. Some browsers (Safari/Opera) have decided that is so important, that it take matters into it’s own hands and applies a glowy blue border around active [...]