cross-browser console.log implementation

gistfile1.js

/**
 * Simple cross-browser console.log implementation
 *
 * Sean Murphy - https://gist.github.com/1754448
 */

(function (x, w, o, join) { w.console = w.console || x;
  x.log = x.warn = x.info = x.error = o ? o.postError :
   function log() { alert(join.call(arguments, ' ')) };
})({}, window, window.opera, Array.prototype.join);