I don't know if i ask my question in right place?

Have you seen when you want to compose a mail in yahoo and type in "To"'s field the Email Address that you want to send the mail and after you typed the yahoo itself turn the text into a colored shape like a text(email address) in middle of a rectangle. I want to use that in my website how can i do that?

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Please don't cross post - stackoverflow.com/questions/8577155/… – ChrisF Dec 20 '11 at 14:55
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closed as off topic by Su', paulmorriss, Lèse majesté, John Conde Dec 20 '11 at 17:06

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