function setAHover(id){
  if(elem = document.getElementById(id)){
    elem.style.color = '#ffc000';
    elem.style.textDecoration = 'underline';
  }
  return;
}

function unsetAHover(id){
  if(elem = document.getElementById(id)){
    elem.style.color = '#fff';
    elem.style.textDecoration = 'none';
  }
  return;
}

function setImgHover(id){
  if(elem = document.getElementById(id)){
    elem.style.borderColor = '#ffc000';
  }
  return;
}

function unsetImgHover(id){
  if(elem = document.getElementById(id)){
    elem.style.borderColor = '#fff';
  }
  return;
}

function submitFormStrankovani(fname, lpage){
  var f = document.forms[fname];
  if(f) f.page.value = lpage;
  f.submit();
  return;
}

function showHideDiv(id, flag){
  if(elem = document.getElementById(id)) elem.style.display = flag ? 'block' : 'none';
  return;
}

function showListaNoveFoto(){
  if(lista_nove_foto){
    if(div = document.getElementById('div_lista')){
      div.style.position = "relative";
      div.style.left = 0;
    }
  } 
  return;
}