I did find a way with jQuery to resolve this issue, but it would be nice if it was handled by the viewer automatically.
jQuery Code:
$(document).ready(function () {
ChangeDocumentViewerSize();
});
$(window).resize(function () {
ChangeDocumentViewerSize();
});
function ChangeDocumentViewerSize() {
$('#dvDemo').width($(window).width());
$('#dvDemo').height($(window).height());
}