Réf. : Re: suggestion: calculating values of sizes

>  There may be situations that are much more complicated, and seem
>  impossible, but positioning is very powerful if you know what you're
>  doing...

The situation is complicated enough already:

- What if the user shrinks the browser window so the client area is less
than 300 px high?

- What happens when you print (to an "infinitely long" medium on which you
might want #one and #three to appear on each page,...

- ...where the adjusted values of #one.style.height plus
#three.style.height might exceed the page height...)?

if (calc() == approved) {
  include "if(){}";
} else {
  return chaos;
}

Les