how to make pop out text like on mouseover bubble effect?

I like to know if any one can help me on to make this
I need some text to show onMouse over pop out a bubble
any one know the code for.
Thank you.

Any help will do well grateful

Thanks to all the experts who take the time to read this post
God Bless you all.
nice work Opencart team

use javascript onmouse event to popup a "caption"