versions/0.2.2/oj.js
function _d(){
    for (var ix = 0;ix < arguments.length; ix++)
      if (arguments[ix] != null)
        return arguments[ix]
    return null
  }
function _d(){
    for (var ix = 0;ix < arguments.length; ix++)
      if (arguments[ix] != null)
        return arguments[ix]
    return null
  }
_d(args...): initialization helper that returns first arg that isn't null