Newbie question: IE problem w/ <div> switching

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My webpage: [url]http://www.jpsaos.com/geis[/url]

Can anybody tell me why the buttons on the left can switch the content in my <div> box on Safari but not IE?

This is my function for the switch…

function jah(url,target) {
// native XMLHttpRequest object
document.getElementById(target).innerHTML = ‘sending…’;
if (window.XMLHttpRequest) {
req = new XMLHttpRequest();
req.onreadystatechange = function() {jahDone(target);};
req.open(“GET”, url, true);
req.send(null);
// IE/Windows ActiveX version
} else if (window.ActiveXObject) {
req = new ActiveXObject(“Microsoft.XMLHTTP”);
if (req) {
req.onreadystatechange = function() {jahDone(target);};
req.open(“GET”, url, true);
req.send();
}
}
}

function jahDone(target) {
// only if req is “loaded”
if (req.readyState == 4) {
// only if “OK”
if (req.status == 200) {
results = req.responseText;
document.getElementById(target).innerHTML = results;
} else {
document.getElementById(target).innerHTML=”jah error:n” +
req.statusText;
}
}
}

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