var prevSelectedTab = '';
function toggleSection(sender, obj)
{
    document.getElementById("why_us").style.display = obj == "why_us" ? "block" : "none";
    document.getElementById("ready_buy").style.display = obj == "ready_buy" ? "block" : "none";
    document.getElementById("ready_sell").style.display = obj == "ready_sell" ? "block" : "none";
    document.getElementById("lwhy_us").className = obj == "why_us" ? "selected" : "";
    document.getElementById("lready_buy").className = obj == "ready_buy" ? "selected" : "";
    document.getElementById("lready_sell").className = obj == "ready_sell" ? "selected" : "";
}  //  toggleSection