Design practice 2- Interactive media issues

Well once again Flash is causing me problems. In the seminar I was able to create two buttons that upon being clicked glowed wither red or green. I was going to use this to indicate a wrong or right answer in my quiz. However once I got back home I have found that it doesn't work for some reason on my laptop or any of my friends. I have used the same code and everything but obviously something is different, and Flash being Flash could mean it cud be any tiny ting hidden amongst the lines of code. Once I have figured it out I will put it on here to allow you to have a go.