var http_request = false;
var V_xmltag = '';
var V_div = '';
function makeRequest(url,xmltag,div) {
V_xmltag = xmltag;
V_div = div;
http_request = false;
if (window.XMLHttpRequest) { // Mozilla, Safari,...
http_request = new XMLHttpRequest();
if (http_request.overrideMimeType) {
http_request.overrideMimeType('text/xml');
}
} else if (window.ActiveXObject) { // IE
try {
http_request = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
http_request = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {}
}
}
if (!http_request) {
alert('Giving up :( Cannot create an XMLHTTP instance');
return false;
}
http_request.onreadystatechange = alertContents;
http_request.open('GET', url, true);
http_request.send(null);
return false;
}
function alertContents() {
//alert(V_xmltag+'-'+V_div);
if (http_request.readyState == 4) {
if (http_request.status == 200) {
var xmldoc = http_request.responseXML;
var root_node1 = xmldoc.getElementsByTagName(V_xmltag).item(0);
document.getElementById(V_div).innerHTML = root_node1.firstChild.data; // text
document.getElementById('fld_'+V_div).value = root_node1.firstChild.data; // field data 
//alert(root_node1.firstChild.data);
} else {
alert('There was a problem with the request.');
}
}
}

//onclick="makeRequest('http://www.dogcollarlabor.com/cgi-bin/ajaxtest.cgi','poo','ajaxtest2')"
//print "<poo>".$dynamicdata."</poo>";
//<div ID="ajaxtest1">test text</div>