function adjustLayout()
{
  // Get natural heights
  var cHeight = xHeight("frame_center");
  var lHeight = xHeight("navigation");
  var rHeight = xHeight("extra");

  // Find the maximum height
  var maxHeight =
    Math.max(cHeight, Math.max(lHeight, rHeight));

  // Assign maximum height to all columns
  if(cHeight < maxHeight)
	  xHeight("frame_center", maxHeight);
  //xHeight("sidebar", maxHeight);
  //xHeight("sidebar1", maxHeight);

  // Show the footer
  xShow("footer");
}
window.onload = function()
{
  xAddEventListener(window, "resize", adjustLayout, false);
  adjustLayout();
}