you need something more like this:
XMLHttpRequestObject.onreadystatechange = function() {
if (XMLHttpRequestObject.readyState == 4 && XMLHttpRequestObject.status == 200) {
objID.innerHTML = XMLHttpRequestObject.responseText;
}
}
you need to wrap your logic in the event handler
So integrated with your script would be:
function getCurBid(bidID){
var XMLHttpRequestObject = false;
if (window.XMLHttpRequest)
{
// code for IE7+, Firefox, Chrome, Opera, Safari
XMLHttpRequestObject = new XMLHttpRequest();
}
else if (window.ActiveXobject)
{
// code for IE6, IE5
XMLHttpRequestObject = new ActiveXObject("Microsoft.XMLHTTP");
}
if(XMLHttpRequestObject)
{
var objID = document.getElementById("curBid"+bidID);
XMLHttpRequestObject.open("GET","ajax_getBid.cfm?ida="+bidID,true);
XMLHttpRequestObject.onreadystatechange = function() {
if (XMLHttpRequestObject.readyState == 4 && XMLHttpRequestObject.status == 200) {
objID.innerHTML = XMLHttpRequestObject.responseText;
}
};
XMLHttpRequestObject.send();
}
}