console.log wrapper....

gistfile1.js

// just working on FF

	var log = (function() {
		if(window.console && typeof window.console.log === 'function')
			return console.log
		return function() {}
	})();

// idem
if (typeof console == "undefined" || typeof console.log == "undefined") {
    var console = { log: function() {} };
}

// this works everywhere...
// http://paulirish.com/2009/log-a-lightweight-wrapper-for-consolelog/
window.log = function(){
  log.history = log.history || [];   // store logs to an array for reference
  log.history.push(arguments);
  if(this.console){
    console.log( Array.prototype.slice.call(arguments) );
  }
};