// JavaScript Document
function balicka(ulid, plid) {
  var plusko = document.getElementById(plid);
  var src = plusko.src;
  
  if (src.indexOf("ico-add0.gif") >= 0) {
    plusko.src = "../imgs/minus.gif";
    document.getElementById(ulid).style.display = "block"; 
  }
  else {
    plusko.src = "../imgs/ico-add0.gif";
    document.getElementById(ulid).style.display = "none"; 
  }
}