function zavri(co,el)
  {
    var nabidka = new Array("menu1","menu2","menu3");
    var nab = new Array("m1","m2","m3");
    for(i=0;i<nabidka.length;i++)
    {
      if(nabidka[i]!=co)
      {
        if(eval("document.getElementById('"+nabidka[i]+"').className") == 'viditelny')
        {
           eval("document.getElementById('"+nabidka[i]+"').className='neviditelny'");
           eval("document.getElementById('"+nab[i]+"').className='menuitem-main-plus'");
        }
      }  
    }  
  }
  function rozevri(co,el)
  {
    if(eval("document.getElementById('"+co+"').className") == 'neviditelny')
    {
      eval("document.getElementById('"+co+"').className='viditelny'");
      eval("document.getElementById('"+el+"').className='menuitem-main-minus'");
      vytvor_cookie(co.substr(4));
      //zavri(co,el);
    }
    else
    {
      eval("document.getElementById('"+co+"').className='neviditelny'");
      eval("document.getElementById('"+el+"').className='menuitem-main-plus'");
      smaz_cookie(co.substr(4))
    }
  }  
  function vytvor_cookie(hodnota)
  {
    var C = "ot_menu=" + hodnota;
    document.cookie = C;
  }
  function smaz_cookie()
  {
    var C = "ot_menu=-1";
    document.cookie = C;
  }
  function al()
  {
    alert(document.cookie);
  }
  function otevrit()
  {
    var C = document.cookie;
    var co = (C.indexOf(";")>5) ? (C.substring(8,C.indexOf(";"))) : (C.substring(8));
    
    if(co>0)
    {
      if(document.getElementById('menu1'))
      {
         rozevri('menu'+co,'m'+co);
      }   
    }  
  }