var activeDiv = document.getElementById("CallLinkActiveButton");
var inActiveDiv = document.getElementById("CallLinkInactiveButton");
var activeDivOverview = document.getElementById("CallLinkActiveButtonOverview");
var inActiveDivOverview = document.getElementById("CallLinkInactiveButtonOverview");
var activeDivEvaluate = document.getElementById("CallLinkActiveButtonEvaluate");
var inActiveDivEvaluate = document.getElementById("CallLinkInactiveButtonEvaluate");
var activeDivBuy = document.getElementById("CallLinkActiveButtonBuy");
var inActiveDivBuy = document.getElementById("CallLinkInactiveButtonBuy");
var now = new Date();
var weekDay = now.getUTCDay();
var hour = now.getUTCHours();
// hours of operation are 8am to 6pm, CST (GMT-6) 
var isLive = ((weekDay == 1) || (weekDay == 2) ||
                (weekDay == 3) || (weekDay == 4) ||
                (weekDay == 5))
                && (hour >= 14) && (hour < 24);

if (activeDiv && inActiveDiv) {
    toggleDisplay(activeDiv, inActiveDiv);
}
if (activeDivOverview && inActiveDivOverview) {
    toggleDisplay(activeDivOverview, inActiveDivOverview);
}
if (activeDivEvaluate && inActiveDivEvaluate) {
    toggleDisplay(activeDivEvaluate, inActiveDivEvaluate);
}
if (activeDivBuy && inActiveDivBuy) {
    toggleDisplay(activeDivBuy, inActiveDivBuy);
}

function toggleDisplay(active, inactive) {
    if (isLive) {
        active.style.display = "inline";
        inactive.style.display = "none";
    }
    else {
        active.style.display = "none";
        inactive.style.display = "inline";
    }
}