older browsers (thanks again Microsoft) will crash if you use console.log in your code and not have the developer tools open at the same time. Luckily its an easy fix. Simple use the below code snippet at the top of your code and good old IE should leave you alone: http://stackoverflow.com/questions/4743730/what-is-console-log-and-how-do-i-use-it

console-log.js

if(!window.console){ window.console = {log: function(){} }; } 

console.log('Testing console');