i wonder if someone help me to create a button like this:

See Green button on right side showing half phone number however on click it shows complete phone number.

http://www.pakwheels.com/used-cars/suzuki-mehran-2011-for-sale-in-lahore-1323197

Support I have a phone number that is not completly visible i.e phone number is: 0123456789 and i want to show those numbers as 0123456... and on click complete number should be available for users. just like above link. plz help

best regards