2 questions about Input text boxes

Hi !

First post here…

I’d like to ask you how can I have a text written on an input text box (I will be using it for a newsletter submission, where I want to appear something like “insert your email”) that automatically clears itself (empty string, right?) when people click on it to start typing.

I’d also like to know how I can achieve a similar highlight effect as the one on [color=white]www.macromedia.com[/color] 's search box, when you have it selected.

Thank you for your help