Anything which is set by CSS can be changed by JavaScript. Try each of these in turn by pasting them into your function from the previous pages. Replace what is already there and then hover over the red words. If the changed script doesn't seem to work it may be your browser using the old script (caching it). Press F5, CTRL-F5 or the reload button to reload the page bypassing the cache (or use a different browser).
window.document.body.style.fontFamily="Verdana";
window.document.body.style.fontSize="30px";
window.document.body.style.fontStyle="italic";
window.document.body.style.padding="100px";
On the whole any style can be used just by replacing any hyphen in the property with the capitalised first letter convention (e.g. font-size becomes fontSize as above).
