function ukaz(id) {
var sipka = document.getElementById("ukaz"+id);
var sipka2 = document.getElementById("schovej"+id);
var m = document.getElementById("vice"+id);

sipka.style.display="none";
sipka2.style.display="block";
m.style.display="block";
}
function schovej(id) {
var sipka = document.getElementById("ukaz"+id);
var sipka2 = document.getElementById("schovej"+id);
var m = document.getElementById("vice"+id);

sipka2.style.display="none";
sipka.style.display="block";
m.style.display="none";
}