code.js

var quotes = [
  "A deadline a day keeps the programmers at bay."
, "The horn on the bus goes beep beep beep."
, "Words are filthy."
, "Silly hats only."
, "This is a quote."
, "Meow do you know how fast you were going?"
];

function changeQuote() {
    var randomQuoteIndex = Math.floor(Math.random() * quotes.length);
    var newQuote = quotes[randomQuoteIndex];

    document.quoteform.quote.value = newQuote;
}

window.onload = function() {
    changeQuote();
    setInterval("changeQuote()", 2000);
}