<!--
var Open = ""
var Closed = ""

function nahraj_obrazky(){
  if(document.images){
    Open = new Image(12,12)
    Closed = new Image(12,12)
    Open.src = "open.gif"
    Closed.src = "closed.gif"
  }
}

function showhide2(whatXS,whatX1,whatX1S,whatX1P,whatX2,whatX2S,whatX2P,whatX3,whatX3S,whatX3P){
  if (whatX1.style.display=='none'){
    whatX1.style.display='';
    whatXS.src=Open.src
  }
  else{
    whatX1.style.display='none';
    whatX1S.src=Closed.src;
    whatX1P.style.display='none';
    whatXS.src=Closed.src
  }
  if (whatX2.style.display=='none'){
    whatX2.style.display='';
    whatXS.src=Open.src
  }
  else{
    whatX2.style.display='none'
    whatX2S.src=Closed.src;
    whatX2P.style.display='none';
    whatXS.src=Closed.src
  }
  if (whatX3.style.display=='none'){
    whatX3.style.display='';
    whatXS.src=Open.src
  }
  else{
    whatX3.style.display='none'
    whatX3S.src=Closed.src;
    whatX3P.style.display='none';
    whatXS.src=Closed.src
  }
}

function showhide3(whatS,what){
  if (what.style.display=='none'){
    what.style.display='';
    whatS.src=Open.src
  }
  else{
    what.style.display='none'
    whatS.src=Closed.src
  }
}
-->