If I have a bit of time tomorrow I'll try to reproduce your error, can you post what the returned data from the service might look like so i can mock up the Ajax call?

Regarding your question about querystring you can only use Request.Querystring if the parameters are appended to the URL. You can send them in the send method as name value pairs, same format as querystring, but then you'll need to use Request.Form.

--

Joe (Microsoft MVP - XML)

Joe,
    Thanks for your help, it did not occur to me to use Request.Form (it has been quite a while since I have had to do that!) In any case the data that is returned is just an HREF in this format:

"<a href='#' onClick=updateParent('4444','SomeName');> SomeName </a><br>"

And the ajax script that the onClick event is wired to:

function updateParent(id, name)
{
     ShowCustom();
     while (name.indexOf("%20") > -1)
         name = name.replace("%20"," ");

     document.getElementById("cText").value = name;
     document.getElementById("cID").value = id;
}

And showcustom:

function ShowCustom(){
if (document.layers) document.layers["cust"].visibility="show";
else document.getElementById("cust").style.visibility=" visible";
}

cText is a visible text box and cID is a hidden html element.

Thanks again!

-------------------------
I will only tell you how to do it, not do it for you.
Unless, of course, you want to hire me to do work for you.

^^Thats my signature