Java Script issues and or browser issues/win XP Google chrome

[sissy]

This script is posted in my website and works fine with IE8. But now I'm using Google Chrome and the up date isn't showing correctly.

 Contents copyright © 2004-114   -  google chrome
 Contents copyright © 2004-2014  -  IE8

Can anyone tell me why? thank you

<script language="JavaScript">
 copyright=new Date();
update=copyright.getYear();
 
document.write("Contents copyright © 2004-"+ update + "    ");
                              </script>