var XMLHttpRequestObject = false;

if(window.XMLHttpRequest){
  XMLHttpRequestObject = new XMLHttpRequest();
}
else if(window.ActiveXObject){
  XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");
}

function przetwarzajDane(src, dest,gdzie,ktory)
{
  
  if ((document.getElementById(dest).style.display=='block') && (src=='tf1'))
     {
     document.getElementById(dest).style.display='none';
     } else
  if(XMLHttpRequestObject){
    var div = document.getElementById(dest);
    var url = "czynnosci/pokaz_linki.php";
    XMLHttpRequestObject.open("POST", url);
    XMLHttpRequestObject.setRequestHeader(
      'Content-Type', 'application/x-www-form-urlencoded');
    XMLHttpRequestObject.onreadystatechange = function()
    {
      if(XMLHttpRequestObject.readyState == 4 && 
          XMLHttpRequestObject.status == 200){
        var str = XMLHttpRequestObject.responseText;
        div.innerHTML = str;
        document.getElementById(dest).style.display="block";
        
      }
    }
  if (src=='tf1') 
      { 
       var tfValue = document.getElementById('tf1').value;
       tfValue = escape(tfValue);
       XMLHttpRequestObject.send("co=" + tfValue);
      } 
   if (src=='tf2')
      {
      
        var tfValue = document.getElementById('tf1').value;
         tfValue = escape(tfValue);
        var tfValue2 = document.getElementById('tf2').value;
        if ( gdzie!='' )
           {
             tfValue2=gdzie;
            }
           else
           {
             tfValue2 = escape(tfValue2);
           }   
        
        if ( ktory!='' )
          {
          XMLHttpRequestObject.send("co=" + tfValue + "&co2=" + tfValue2 + "&co3=" + ktory);
          }
         else  
        XMLHttpRequestObject.send("co=" + tfValue + "&co2=" + tfValue2);
         
      }
    
  }
}