var nCurDay = null;

function showDayRates(nDay) {
    doShowHide(nDay, "block");
    if (nCurDay && nDay != nCurDay)
        hideDayRates(nCurDay);
    nCurDay = nDay;
}

function hideDayRates(nDay) {
    doShowHide(nDay, "none");
}

function doShowHide(nDay, strDisplay) {
    var obDay = document.getElementById("day_" + nDay);
    if (obDay) {
        obDay.style.display = strDisplay;
    }
}