[JWait]

Also, is there any problem using "max-width" instead of "width"?

EXAMPLE
#page-container {
min-height: 100%;
position: relative;
max-width:1200px;
margin:0 auto;
}

This should mean that on any browser set below 1200 that it will render to fit the screen (without having a width scroll bar), and any browser set over 1200 it will fix the width at 1200 pixels and center the page, at least that is the way I understand it.