function wjazd(kolumna, kolor) {
    var theColumn = document.getElementById(kolumna);
    theColumn.style.borderColor = kolor;
    theColumn.style.zIndex = "5";
}

function zjazd (kolumna) {
    var theColumn = document.getElementById(kolumna);
    theColumn.style.borderColor = "#ccc";
    theColumn.style.zIndex = "0";
}