I don't even really see how this makes sense. I guess it makes a little eensy-weensy bit o' sense if everything on the page is absolutely positioned and sized, but the size of rendered HTML is really a function of the browser. You could, for instance, "render" it with lynx -dump and count the lines.

How do you take into account the user's screen size and resolution? Or whether they resize the browser window? Or use custom styles? Etc.

You should probably be asking yourself if you really need to do this.

-sauoq
"My two cents aren't worth a dime.";