var xmlHttp

function showResults(id, base)
{
  if (id.length==0)
  { 
    document.getElementById("divResults").innerHTML=""
    return
  }

  xmlHttp=GetXmlHttpObject()
  if (xmlHttp==null)
  {
    alert ("Browser does not support HTTP Request")
    return
  } 
  var url=base
  url=url+"?q="+id
  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("divResults").innerHTML=xmlHttp.responseText; 
  } 
} 

function GetXmlHttpObject()
{ 
  var objXMLHttp=null
  if (window.XMLHttpRequest)
  {
    objXMLHttp=new XMLHttpRequest();
  }
  else if (window.ActiveXObject)
  {
    objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
  return objXMLHttp;
} 

function validateLogin()
{
  var user ="";
  var pwd ="";
  user=document.getElementById("txtName").value;
  pwd=document.getElementById("txtPassword").value;
  
  if (user.length==0 || pwd.length==0)
  { 
    document.getElementById("divResults").innerHTML="<span class=content style='color:#000000;'>You must enter a valid user name and password combination.</span>";
    return;
  }
  else
  {  
    xmlHttp=GetXmlHttpObject();
    if (xmlHttp==null)
    {
      alert ("Browser does not support HTTP Request");
      return;
    } 
    var url="validateLogin.php";
    url=url+"?u="+user;
    url=url+"&p="+pwd;
    url=url+"&sid="+Math.random();
    xmlHttp.onreadystatechange=stateChanged; 
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);
  }
}