function createRequestObject() 
{ 
   var req; 
   
   if(window.XMLHttpRequest)
   { 
      req = new XMLHttpRequest(); 
   } 
   else if(window.ActiveXObject) 
   { 
      req = new ActiveXObject("Microsoft.XMLHTTP"); 
   } 
   else 
   { 
      alert('XMLHttpRequest object not created'); 
   } 

   return req;
}

function sendRequest(pc, h, veld1, veld2) 
{ 
	if(pc.length > 0 && h.length > 0)
	{
		v1 = veld1;
		v2 = veld2;
		http.open('get', 'PCCheck.aspx?pc=' + pc + '&h=' + h); 
		http.onreadystatechange = handleResponse; 
		http.send(null); 
	}
} 

function handleResponse() 
{ 
   if(http.readyState == 4 && http.status == 200)
   { 
      if(http.responseText) 
      {
		_adres	= http.responseText.split("~");
		_straat = _adres[0]; 
        _plaats	= _adres[1]; 
        
        v1.value = _straat;
        v2.value = _plaats;
      }
   }
} 

var http = createRequestObject();
var v1 = null;