Getting info from the http.responseText/XML to the web page

[ajaxWanderer]

I'm using Ajax with a php proxy to make a query to a webservice and get the data back to a web page (and ultimately into a database).

"getVIN()" is my function to send the XMLHttpRequest to the php proxy. Then "onreadystatechange" uses "useVIN." It's this function that I'm having my problems with.

function  useVIN()
{
	if (http.readyState == 4) 
	{
		if (http.status == 200)
		{ 
			var respText = http.responseText;
			document.getElementById("vehInfo").innerHTML = respText;
			
			alert("The VIN query was successful.");
		}
	}
}

If I run the code with Firebug I see the responseText in the Watch window when I get to the "document.getElement..." line. But nothing gets printed in the vehInfo. I've also tried a bunch of ways to extract using the http.responseXML, but those don't work either. If I can't even print the http.responseText to the web page, there's something happening that I can't figure out.