up_aktivni = new Image();    up_aktivni.src = "upon.gif";
up_neaktivni = new Image();  up_neaktivni.src = "upof.gif";
dn_aktivni = new Image();    dn_aktivni.src = "dnon.gif";
dn_neaktivni = new Image();  dn_neaktivni.src = "dnof.gif";

function show_menu(menicko)
{
 if (menicko != "menicko") document.getElementById("menicko").style.visibility = "hidden";
   else document.getElementById("menicko").style.visibility = "visible";

 if (menicko != "menuet") document.getElementById("menuet").style.visibility = "hidden";
   else document.getElementById("menuet").style.visibility = "visible";
}

function up(par)
{
  if (par == 1)
  {
    y = document.getElementById("inner2").style.top;
    if (y.length > 0) y = y.substr (0,y.length - 2);
    y++; y++; y++; 
    if (y > 0) y = 0;
    y = y + "px";
    document.getElementById("inner2").style.top = y;
    casovac = window.setTimeout("up(1);", 1); 
  }                              
  if (par == 2)
    clearTimeout(casovac);
}

function down(par,max)
{
  if (par == 1)
  {
    y = document.getElementById("inner2").style.top;
    if (y.length > 0) y = y.substr (0,y.length - 2);
    y--; y--; y--; 
    if (y < -max) y = -max;
    y = y + "px";
    document.getElementById("inner2").style.top = y;
    casovac = window.setTimeout("down(1," + max + ");", 1); 
  }
  if (par == 2)
    clearTimeout(casovac);
}