function SetNode(nodeName) {
            if (document.getElementById("Items" + nodeName).style.display == 'none') {
              // Open
              document.getElementById("Image" + nodeName).src = '../images/minus.gif';
              document.getElementById("NodeImage" + nodeName).src = '../images/m1.gif';
              document.getElementById("Items" + nodeName).style.display = 'block';
            }
            else {
              // Close
              document.getElementById("Image" + nodeName).src = '../images/plus.gif';
              document.getElementById("NodeImage" + nodeName).src = '../images/m1.gif';
              document.getElementById("Items" + nodeName).style.display = 'none';
            }
        }