I am just starting out, so I do not know much. I think I grasp what I know so far fairly well.

However I have noticed that there is a significant difference in how my code is displayed between IE and FireFox. I have the latest versions of each. Do I need to enable something in FireFox for it to display properly or are they just different?

An example of what I am talking about is this simple code:

window.alert("Hello world");

In FireFox it doesn't float above the page, and it doesn't have the escape x in the upper right corner (it is not there at all).