logging to DOM function

log.js

var logEl = document.getElementById('log');

var log = function() {
  var l = arguments.length;
  var args = new Array(l);
  --l;
  for (; l >= 0; --l) {
    try {
      args[l] = JSON.stringify( arguments[l] );
    } catch (ex) {
      args[l] = arguments[l];
    }
  }
  var el = document.createElement('div');
  el.appendChild( document.createTextNode( args.join(', ') ) );
  logEl.appendChild(el);
};