Question

Please consider changing the FogBugz page "header" so the rest of a page can be scrolled without losing the information displayed at the top of the page.

That is, "lock" the following information at the top of the page so it's always in view:

Answer 1

You can definitely do that without frames. Here's a BugMonkey customization that will keep the "header" at the top of your screen even as you scroll the page:

name:          Floating top nav
description:   Makes the top nav remain fixed at the top of the screen as you scroll
author:        Dane Bertram
version:       1.4.0.0

js:

if (!$.browser.msie || parseInt($.browser.version, 10) > 6)
  $('body').addClass('floatingTopNav');


css:

.floatingTopNav #navTopContainer {
  position: fixed;
  right: 0;
  left: 0;
  z-index: 1;
}
.floatingTopNav #banner {
  position: fixed;
  left: 0;
  right: 0;
  top: 21px;
  z-index: 1;
}
.floatingTopNav #belowBanner {
  position: fixed;
  right: 0;
  top: 63px;
  z-index: 1;
}
.floatingTopNav #appTabs {
  position: fixed;
  left: 0;
  z-index: 2;
}
.floatingTopNav #mainArea {
  margin-top: 90px;
}
.floatingTopNav div.messageBar {
  position: fixed;
  z-index: 1;
}
.floatingTopNav .popupMenu {
  position: fixed !important;
}
.floatingTopNav .favoritesPopup {
  position: fixed !important;
  left: auto !important;
  right: 7px !important;
}
.floatingTopNav #idDropList_searchFor_oDropList {
  position: fixed !important;
  top:   54px !important;
  left:  auto !important;
  right:  7px !important;
  z-index: 12 !important;
}
.floatingTopNav .popupMenu.emailActionsMorePopup {
  position: absolute !important;
}