function resize() {
 if(document.body.clientHeight > 455 && document.body.clientHeight < document.getElementById("page_subcontainer").clientHeight) {
  document.getElementById("page_container").style.height = document.getElementById("page_subcontainer").clientHeight+"px";
  document.getElementById("footer_line").style.top = document.getElementById("page_subcontainer").clientHeight-24+"px";
 }
}
window.onresize = resize;
window.onload = resize;