function locateList(letterIndex)
{
    var listBox = document.getElementById("NameList");
    for (var x=0; x<listBox.length ; x++)
    {
        var tempName = listBox.options[x].text;
        if (tempName.substring(0,1) == letterIndex)
        {
            listBox.selectedIndex = x;
            getData();
            break;
        }
    }
}

function getData()
{
  var idx = document.getElementById("NameList").value;
  var frame = document.getElementById("userData");
  frame.src="includes/userData.php?idx="+idx//obj.value;
  var rr = "";
}