var XMLHttpRequestObject = false; 

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

function glosuj(idsondy,opcja) {
    var kontener = document.getElementById('sonda_div');
    if(XMLHttpRequestObject) {
    	XMLHttpRequestObject.open("POST", "content/sonda.php"); 
        XMLHttpRequestObject.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); 

        XMLHttpRequestObject.onreadystatechange = function() 
        { 
           if (XMLHttpRequestObject.readyState == 4 && XMLHttpRequestObject.status == 200)
           { 
              kontener.innerHTML = XMLHttpRequestObject.responseText; 
           } 
        } 
						 
        XMLHttpRequestObject.send("id=" + idsondy+"&wariant=" + opcja); 
    }
}