'XMLHttpRequest' is undefined in IE6

[dlebowski]

I cannot figure out  why this will not work for me in IE6.  Can anyone help me with this?  Thank you in advance. 

 

function loadXmlHttp(url, id) {
var f = this;
f.xmlHttp = null;

if (window.XMLHttpRequest&&!f.ie||/^http/.test(window.location.href))
f.xmlHttp = new XMLHttpRequest(); // Firefox, Opera 8.0+, Safari, others, IE 7+ when live - this is the standard method
else if (/(object)|(function)/.test(typeof createRequest))
f.xmlHttp = createRequest(); // ICEBrowser, perhaps others
else {
f.xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
if(f.xmlHttp != null){
f.el = document.getElementById(id);
f.xmlHttp.open("GET",url,true);
f.xmlHttp.onreadystatechange = function(){f.stateChanged();};
f.xmlHttp.send(null);
}
}