User-defined console.log() function for debug messages in JavaScript. Useful if Firebug is not installed in your browser.

console.log.js

// Author: Abhinay Omkar

if(!window.console){
	var console = {
		log: function(msg){
			throw new Error(msg);
		}
	}
}

// Use It
// If Firebug is installed in your browser the logger of Firebug will be called 
// Otherwise, the above user defined function will be called. 
console.log("Hello World!");

I've just written my own log wrapper function that enclosed it in a try/catch.