How to make text field easy (just one click auto spreading) like in imageshack.us ?

After you upload some image to imageshack.us there are few text field that you can choose

How to make text field like that (user just need to click one times and cursor spreading automatic)



So it will make user easy to copy link from imageshack



reputation for who can help

 

you add a

onClick="highlight"

PHP:

 

thank you, grp for you