Source of AjaxLibrary.js

var Ajax = new Object();

Ajax.getContentFromURI = function(sFromUrl, oTargetElement, callback, skipCache) {

    try{

        oTargetElement.innerHTML = "... loading ...";

        xAddClass(oTargetElement,"loading");

        var xmlhttp = new XMLHttpRequest();

        xmlhttp.open("GET", sFromUrl, true);

        function ajax_dhtml_loadHandler() {

            if (xmlhttp.readyState == 4) {

                Ajax.updateContentFromNode(xmlhttp.responseXML, oTargetElement, callback);

            };

        };

        xmlhttp.onreadystatechange = ajax_dhtml_loadHandler;

        if (skipCache) {

             var oldage = "Sat, 1 Jan 2000 00:00:00 GMT";

             xmlhttp.setRequestHeader("If-Modified-Since", oldage);

        };

        xmlhttp.setRequestHeader("Accept","x-ajax");

        xmlhttp.send("");

    }

    catch(e){

        oTargetElement.innerHTML = "load failed: "+e;

        throw e;

    };

};

Ajax.updateContentFromNode = function(oNode, oTargetElement, callback) {

    try {

        Sarissa.clearChildNodes(oTargetElement);

        xRemoveClass(oTargetElement,"loading");

        // check for parsing errors

        var ownerDoc = oNode.nodeType == Node.DOCUMENT_NODE?oNode:oNode.ownerDocument;

        if(ownerDoc.parseError && ownerDoc.parseError != 0) {

            var pre = document.createElement("pre");

            pre.appendChild(document.createTextNode(Sarissa.getParseErrorText(ownerDoc)));

            oTargetElement.appendChild(pre);

        }

        else {

            callback(oNode,oTargetElement);

        };

    }

    catch(e) {

        oTargetElement.innerHTML = "update failed: "+e;

        xAddClass(oTargetElement,"error");

    }

};

Ajax.copyChildren = function(f,t) {

  if (!f || !t) return;

  var s = new XMLSerializer();

  var ht = "";

  for (var i = 0; i < f.childNodes.length; i++) { ht += s.serializeToString(f.childNodes[i]); }

  t.innerHTML = ht;

}