rlay');
            var dialogBox = document.getElementById('dialog-box');

            dialogOverlay.style.display = "block";
            dialogOverlay.style.height = winH + "px";
            dialogBox.style.left = ((winW / 2) - (550 / 2)) + "px";
            dialogBox.style.top = "100px";
            dialogBox.style.display = "block";

            document.getElementById('dialog-box-head').innerHTML = "A value is required";
            document.getElementById('dialog-box-body').innerHTML = dialog;
       