On Mon, 13 Feb 2012 19:12:09 -0000, Boris Zbarsky <bzbar...@mit.edu> wrote:
On the contrary, if you've laid out two screenfuls you can guess that
anything after that will not be in the aforeoutlaid* screenfuls.

I wasn't talking about guessing at visibility. I was talking stuff like this:

   <!doctype html>
   <div style="height: 100vh"></div>
   <img src="something">
   <div style="position: relative; top: -50vh"></div>

Where should that second div be placed? Should the user be able to see it? You don't know until you know the image size.

In this case, User agents would obviously need to test if the latter div would be visible if the image was monopixel. Such complications would be bound to add up as we take more features into account; the optimization may well not be worth the complexity.

And it gets even worse when tables are involved, because an image arbitrarily far down the table can affect the table column widths and the width of the whole table and the site probably depends on particular widths.

I surrender to broken websites.
--
-,Bjartur

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