function get_year(id){ var d = new Date(); var y = d.getYear(); document.getElementById(id).value = y; }
<html> <head> <script src='date.js'></script> </head> <body> <input name="pub_year_id" id="pub_year_id"> <input name="current_year" id="current_year"> <script> get_year("pub_year_id"); get_year("current_year"); </script> </body> </html>