Write your Happy New Year JavaScript

function happy_new_year() { run() }
function run() { 
 var c = arguments.callee.caller.name; 
 var arr = c.split("_"); 
 arr = arr.map(function(s) { 
  return s[0].toUpperCase() + s.substr(1); 
 }); 
 console.log(arr.join(" "));
}
happy_new_year();