check uncheck All checkboxes with another single checkbox use jquery

Question

I use jquery-1.9.1.js In my html page, it works well for the first time.

just like http://jsfiddle.net/pzCcE/1/

Can somebody help me to improve it?

Answer 1

the fastest way. and save some lines

   $(".ulPymnt input[type=checkbox]").each(function(){                
       $(this).prop("checked", !$(this).prop("checked"))                
   })