Why isn't this AJAX working for Internet Explorer?

<script language="javascript">
var XMLHttpRequestObject= false;

if (window.XMLHttpRequest) {XMLHttpRequestObject = new XMLHttpRequest();
} else if (window.ActiveXObject) {XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");
}
else if (window.ActiveXObject) {XMLHttpRequestObject = new ActiveXObject("Msxml2.XMLHTTP");}

function getData()
{
var lenderNumber=document.getElementById('lenderNumber').value;
var dataSource="reposearch.php?lender_number=" + lenderNumber;
if(XMLHttpRequestObject) {
var obj = document.getElementById('test');
XMLHttpRequestObject.open("GET", dataSource);

XMLHttpRequestObject.onreadystatechange = function()
{
if (XMLHttpRequestObject.readyState == 4 && XMLHttpRequestObject.status == 200) {
obj.innerHTML = XMLHttpRequestObject.responseText;
}
}
XMLHttpRequestObject.send(null);
}
}

function getTable()
{
document.getElementById('table').innerHTML= "<tr><td align='center'><img src='images/loading.gif' /><br />Loading...</td></tr>";
var days_new = <?php echo $days_new; ?>;
var show_only = document.getElementById('show_only').value;
var order = document.getElementById('order').value;
var field = document.getElementById('fieldSelect').value;
var tableSource="ajaxreporttable.php?field=" + field + "&order=" + order + "&show_only=" + show_only + "&days_new=" + days_new;
if(XMLHttpRequestObject){

var table = document.getElementById('table');
XMLHttpRequestObject.open("GET", tableSource);

XMLHttpRequestObject.onreadystatechange = function()
{
if (XMLHttpRequestObject.readyState == 4 && XMLHttpRequestObject.status == 200) {
table.innerHTML = XMLHttpRequestObject.responseText;
}
}
XMLHttpRequestObject.send(null);
}
}
</script>

It works in other browsers, but not Internet Explorer....please help!...Show more

The first function works, but the getTable() function does not work in Internet Explorer...Show more