Customize Error tip on Validation

Hi All,

I have an input field on which I have applied a validation.

On error, the border goes red and and error tip is displayed that says "Invalid Entry"

I would like to edit this message to a customized one.

What is the way to do so?

Please help.

Here is a url of the sample:

http://jsbin.com/yudokahi/1/edit

Thanks

Amjads