Firefox is a good browser (some say its the best) and I personally use it. But there are certain things about Firefox that I don't like. One is it messing with the page contents.

Here is an example. Try putting this somewhere on your page

Notice an major flaw? An unclosed <script> . When viewing such a page on IE, you see nothing after the <script> tag, i.e, "The rest of the page contents" and all go invisible. Seeing that, you can figure out that something is wrong with the page and inturn, debug it. But weird enough, Firefox fixes this by itself and renders the page as normal :S And you never come to know about the flaw. This has happened to me, big time.

Then a second example. Put this code somewhere in your html page.

Open the page in firefox and view the page's source.

You'll see this

See an extra ">", that's the weird firefox's weird act