How to Limit The Range of Date Picker to Only One year (For ex 2015)

How to Limit The Range of Date Picker to Only One year (For ex 2015)

Can some one please let me know how I can force jQuery UI Data Picker to loop only in one specific year months? I only would like to enable users select dates from Jan 1 , 2015 until end of year and again if they click on month changing button the Calende starts over from Jan First?
I already tried thses

  1.  $('#example1').datepicker({
  2.                   maxDate: new Date(2015, 11, 31)
  3.                 });  


  1.                 $('#example1').datepicker({
  2.                    yearRange: new Date().getFullYear() + ':' + new Date().getFullYear()
  3.                 });  

but didnt get the result.

Thanks