function features(divId) {
    if (lastDiv) document.getElementById(lastDiv).style.backgroundColor = "#ffffff";
    var sourceId = divId + 'Ben';
    var source = document.getElementById(sourceId).innerHTML
    document.getElementById("benefitsDetail").innerHTML = source;
    document.getElementById(divId).style.backgroundColor = "#e6e6e6";
    lastDiv = divId;
}