How to make an auto copy text box?

hello , im wanting to make a text box when u click it , it auto highlight and copy everythings thats in the box..

and if its possible too , i want to know if theres also an option when u already clicked that box it changes background color example the box background is white but after clicking it it auto copy everything and background turns grey so people know that they clicked that box already ..

if you can help me with code for it i would be really appreciated and thanks alot

 

IIRC most new browsers refuse javascript access to the clipboard to prevent abuse
Tinypic and several others that do autocopy on click use Flash typically.

 

here's an example ,scroll down to see

http://www.superpysz.com/

 

Here you can find how to perform a Cross Browser copy... http://code.google.com/p/zeroclipboard/