IE6 Compatability issue

[mrnorx]

Hi, I am using the following AJAX script on my website which is called by an onchange event but it doesnt seem to work when the user has ie6 on their computer. I wouldnt normally worry but some of my colleagues who will use the script cant update their browser on work PCs. Im not great with AJAX but maybe someone can tell me where I have gone wrong.

<script language="javascript" type="text/javascript">
<!--
//Browser Support Code
function ajaxFunction(){
var ajaxRequest; // The variable that makes Ajax possible!

try{
// Opera 8.0+, Firefox, Safari
ajaxRequest = new XMLHttpRequest();
} catch (e){
// Internet Explorer Browsers
try{
ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try{
ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e){
// Something went wrong
alert("Your browser broke!");
return false;
}
}
}
// Create a function that will receive data sent from the server
ajaxRequest.onreadystatechange = function(){
if(ajaxRequest.readyState == 4){
var ajaxDisplay = document.getElementById('ajaxDiv'); 

ajaxDisplay.innerHTML = ajaxRequest.responseText;
}
}
var dealername = document.getElementById('dealername').value;
var queryString = "?dealername=" + dealername;
ajaxRequest.open("GET", "/getuser.php" + queryString, true);
ajaxRequest.send(null);
}

//-->
</script> 

[fugix]

you have the ie browser classes listed in your try statements..only thing I can think of is that they might have javascript compatibility turned off on their browser