difference between XMLHttpRequest and $ajax
<p>Hello I have read about jQuery ajax method, jQuery wraps some XMLHttpRequest inside. 
I need(want) to redo next stuff to $ajax, but i wearied about parameters, is it possieble send to $ajax url with parameters with out param key just in URL param ?</p>

<pre><code>var element ;
   ...
   if (window.XMLHttpRequest) { // Mozilla, Safari,... 
        http_request = new XMLHttpRequest();
    } else if (window.ActiveXObject) { // IE 
        http_request = new ActiveXObject("Microsoft.XMLHTTP");
    }
    http_request.onreadystatechange = function() { alertContents(element); };
    url = unescape(url + parameters);
    http_request.open('GET', url, true);
    http_request.send(null);
</code></pre>
