var xmlHttp
function showHint(str)
{
  if (str.length==0)
        {
          document.getElementById("txtHint").innerHTML=""
                return
        }
        xmlHttp=GetXmlHttpObject()
        if (xmlHttp==null)
        {
          alert ("Browser does not support HTTP Request")
                return
        }
        var url="sec.php"
        url=url+"?md5input="+str
        url=url+"&sid="+Math.random()
        xmlHttp.onreadystatechange=stateChanged
        xmlHttp.open("GET",url,true)
        xmlHttp.send(null)
}
function stateChanged()
{
  if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
        {
          document.getElementById("MAC").value=xmlHttp.responseText
        }
}
function GetXmlHttpObject()
{
  var objXMLHttp=null
  if (window.XMLHttpRequest)
        {
          objXMLHttp=new XMLHttpRequest()
        }
        else if (window.ActiveXObject)
        {
          objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
        }
        return objXMLHttp
}