A Colorful Clock With CSS & jQuery with real time of the server, not cliets time, ho do this?

A Colorful Clock With CSS & jQuery with real time of the server, not cliets time, ho do this?

Friends, I made a clock using this Jquery:
http://tutorialzine.com/2009/12/colorful-clock-jquery-css/

But this watch takes time customer, I would use this jquery to get the server time, how I can do this?

thanks