Jquery Datepicker not working on cloned body and after server side postback

Jquery Datepicker not working on cloned body and after server side postback

 I have a html table.On this table one of the fields is a jQueryUIdatePicker.When I clone the body in a table, all its markup's are cloned into a new div.Now there are two elements on a page the original and a cloned one. When i create new datepicker element with append() datepicker works  fine.But when i select the date for new(cloned) element it affects in the  first(original) element.
 One more issue i am facing is that after a server side postback any of the jquery datepicker including cloned ones does not work.

Thanks for your time,
Ejaz Mulla.