function body_load() {
  corr_menu();
  natahni_linku();
  }           
  
function corr_menu() {
  var k = document.getElementById('kolaz');
  bk = k.offsetTop + k.offsetHeight;
  var m = document.getElementById('menu');
  bm = m.offsetTop + m.offsetHeight;
  if (bk<bm) {
    var cdiv = document.getElementById('menucorrdiv');
    cdiv.style.height = bm-bk+'px'; 
    cdiv.style.display = 'block'; 
    }
  }

function natahni_linku() {
  c = document.getElementById('cary');
  hc = c.offsetHeight;
  hb = document.body.scrollHeight;
  if (hb>hc) {
    c.style.height = hb;
    }
  }