TD_unhide

        var tdTag = document.getElementById("emailError");
        if (tdTag) {
            tdTag.style.visibility = "visible";
        } else {
            tdTag = document.createElement("td");
            tdTag.id = "emailError";
            document.getElementById("emailInput").appendChild(tdTag);
            var errorNameMessage = document.createTextNode("Must Enter Email!");
            tdTag.appendChild(errorNameMessage);
        }