function getScreenWidth() {
    isNetscape = (navigator.appName == "Netscape");
    available = (isNetscape) ? window.innerWidth : document.body.clientWidth;
    return available;
  }
  
  function getScreenHeight() {
    isNetscape = (navigator.appName == "Netscape");
    available = (isNetscape) ? window.innerHeight : document.body.clientHeight;
    return available;
  }
  
  function setHeights(corr) {
    if (corr) corr = 20;
    else corr = 0;
    bod = document.getElementById('body');
    con = document.getElementById('content');
    lef = document.getElementById('left');
    rig = document.getElementById('right');
    lar = document.getElementById('large');
    w = getScreenWidth();
    l = (w - 800) / 2;
    offset = 100;
    if (con.offsetHeight > getScreenHeight()) cw = 16;
    else cw = 0;
    h = con.offsetHeight;
    bod.style.left = Math.abs(l - offset) + 'px';
    lef.style.width = Math.abs(l - offset) + 'px';
    rig.style.left = (l + 800 - offset) + 'px';
    rig.style.width = (l + offset - cw) + 'px';
    lar.style.height = (h - 72) + 'px';

  }