When you tell a table to present at 100% you're telling it to display in 100% of the browser space available. On some very large browsers this means reading a line 15 inches across--very difficult to to. And it plays havoc with any images suspended in the page.

Look at this Mudcat page. The HR (horizontal rule) between each message is set to 100% so if you have a large window opened on a big monitor it goes from one side of the page to another. But the blue table above the message form is a fixed size, it won't get larger or smaller as you play with the window size on your screen. It is set at 600 pixels. The response message form is set up a little differently, without a number I can easily tell you, but it also is static and looks like it is about 700 pixels.

If you let your page squish around at 100% then it is always going to look a bit funny to some of your viewers. Go surf the web and look at advertising sites. Those developed professionally don't leave the page display to chance, they lock it in as tightly as possible.

SRS