The input below should have some hint text. The links below can be used to disable and enable this text. If you destroy the text, the DOM should no longer have the label anywhere (look in Firebug). After destruction, the Enable link should not work.
In this example, the input starts off with a value. The input should not receive focus by default. To indicate this, you should see the background is green.
In this example you should see the overtext disappear when the password field is filled in. Enter a value and remove focus from the first input (but don't focus the second one - click out, not tab).