Script to load xml and html files

[seowebtrick]

I used this code to load xml and html file, please give me the right code because this is not working..
giving an error..

function ajaxLoader(url,id) {
 if (document.getElementById) {
   var x = (window.ActiveXObject) ? new ActiveXObject("Microsoft.HTTP") :
 }
 if (x) {
   x.onreadystatechange = function() {
     if (x.readyState == 4 && x.status == 200) {
       el = document.getElementById(id);
       el.innerHTML = x.responseText;
     }
   }
   x.open("GET", url, true);
   x.send(null);
 }
}


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