var lookupURL = ''; 
var xmlHttp; 
function getXMLHTTP() 
{ 
  var A = null; 
  try 
  { 
    A = new ActiveXObject("Msxml2.XMLHTTP"); 
  } 
  catch(e) 
  { 
    try 
    { 
      A = new ActiveXObject("Microsoft.XMLHTTP"); 
    }  
    catch(oc) 
    { 
      A = null; 
    } 
  } 
   
  if(!A && typeof XMLHttpRequest != "undefined")  
  { 
    A = new XMLHttpRequest(); 
  } 
   
  return A; 
} 
 
function doRemoteQuery (queryString) 
{ 
  searching = true; 
  if(xmlHttp && xmlHttp.readyState != 0)  
  { 
    xmlHttp.abort() 
  }      
  xmlHttp=getXMLHTTP(); 
  if(xmlHttp) 
  { 
    xmlHttp.open("GET", lookupURL + queryString, true); 
    xmlHttp.onreadystatechange = function()  
      { 
        if (xmlHttp.readyState == 4 && xmlHttp.responseText && searching)  
        { 
          eval(xmlHttp.responseText); 
          searching = false; 
        } 
      } 
    xmlHttp.send(null); 
  }      
}