onReadyStatechange not being called

[xs2ahmed]

I am usinng the following code to send an email
The code works fine in IE but in Mozilla the function readyStateChanged doesnt get a call back, therefore the user doesnt get the message box saying that his message is sent..
I placed an alert as a first line in that function, It gets called properly in IE but not in Mozilla... any ideas,
Thanks,
Ahmed

 var xhReq;
 function createXMLHttpRequest() {
   try { return new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) {}
   try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch (e) {}
   try { return new XMLHttpRequest(); } catch(e) {}
   alert("XMLHttpRequest not supported");
   return null;
 }

function readyStateChanged() {
//alert("RS called with state:"+xhReq.readyState);

 

     if (xhReq.readyState != 4)  { return; }
 
     if (xhReq.status != 200)  {
		alert("Ooops, I was unable to send your message \nIs your internet properly working???");
            return;
     }
     var serverResponse = xhReq.responseText;
	 
	alert("Cool! Your message Is gone into my inbox, I will look it as soon as possible");



   };

function sendMail(form)
{
 

 xhReq = createXMLHttpRequest();
try { 
 
 
xhReq.open("GET", "http://www.blabla.com/mailproxy.php?comments="+form.comments.value+"&realname="+form.name.value+"&email="+form.email.value, false);


} catch (e) {
alert("Problem occured sending your message..:");

}

 
 xhReq.onreadystatechange = readyStateChanged;
 xhReq.send(null);
}