function getHTTPObject()
{
	if (window.ActiveXObject) return new ActiveXObject("Microsoft.XMLHTTP");
	else if (window.XMLHttpRequest) return new XMLHttpRequest();
	else {
			alert("Twoja przegladarka nie obsluguje AJAXA");
			return null;
		}
}
function pk()
{
if(httpObject.readyState == 4)
 { 
    result = httpObject.responseText;
    document.getElementById('check_statusNIP').innerHTML = result;
    if (result[0]=='-')	{
    	document.getElementById('info_box').innerHTML='<span style="font-size:12px;font-weight:bold;color:red">popraw numer NIP</span>';
    	document.getElementById('submit_box').style.display='none';
    }	
    else {
    	document.getElementById('info_box').innerHTML='';
    	document.getElementById('submit_box').style.display='block';
    	
  }
}
}

function checkNIP() 
{

httpObject = getHTTPObject();
if (httpObject != null) 
 {
	httpObject.open("GET", "_ajax/checkNip.php?str="+document.getElementById('nip').value,true);
	httpObject.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
     httpObject.send(null);
	httpObject.onreadystatechange = pk;

 }
}

var httpObject=null; 
function checkBType() {
	var zm=document.getElementById('bt').value;
	//document.getElementById('nip').value=zm;
	
	if (zm==1) {
		document.getElementById('rest_pol').style.display='none';
		document.getElementById('faktura0').checked=true;
	}	
	else
		document.getElementById('rest_pol').style.display='block';
	
}