function otevrit(a) {
	    okno = document.getElementById(a);
		okno.style.visibility = "hidden";
		setTimeout("okno.style.visibility = ''",100);
		misto = "obsah/"+a+".html"
		tlacidlo = document.getElementById("maxxim");
        tlacidlo.style.visibility = "";
        framecek = document.getElementById("stredni");
        framecek.style.overflow = "";
        lokace = "obsah/"+a+".html"
}

function maxx() {
  t_vsechno = document.getElementById("vsechno")
  t_vsechno.style.display = "none";
  t_tlacidlo = document.getElementById("minimalizator");
  t_tlacidlo.style.visibility = "visible";
  t_tlacidlo.style.width = "84px";
  t_tlacidlo.style.height = "25px";
  t_ifr = document.getElementById("stredni");
  t_telo = document.getElementById("telo");
  t_ifr2 = document.getElementById("velkej");
  t_ifr2.style.visibility = "visible"
   t_telo.style.overflow = "hidden";
  if (navigator.appName == "Microsoft Internet Explorer") {
      t_ifr2.style.height = document.documentElement.clientHeight+"px"
      t_ifr2.src = lokace
      t_ifr2.reload(true)
  } else if (navigator.appName == "Opera") {
   t_ifr2.location.href = t_ifr.location.href
   t_ifr2.style.height=window.innerHeight+"px";
  } else {
     t_ifr2.style.height=document.documentElement.clientHeight+"px"
     t_ifr2.src = lokace
  }
  
}
function minn() {
  o_tlacitko = document.getElementById("minimalizator");
  o_tlacitko.style.visibility = "hidden";
  o_tlacitko.style.width = "84px";
  o_tlacitko.style.height = "25px";
  o_ifr = document.getElementById("stredni");
  o_telo = document.getElementById("telo");
  o_ifr2 = document.getElementById("velkej");
  o_ifr2.style.visibility = "hidden"
  o_telo.style.overflow = "auto";
  o_vsechno = document.getElementById("vsechno");
  o_vsechno.style.display = "";
}