[jQuery] autocomplete

[gordevio]

I have been experimenting with the autocomplete plugin. It is great.
Loading data from a database once and then using it works just fine.
In my setup the html file calls a database query and returns a comma
seperated string. The string is then split up and any typing in the
street input textbox shows the results in kind of like a selectbox
under it. The results are seperatedly selectable. Works fine. I use
the autocomplete.css, bgiframe.js, dimensions.js, and autocomplete.js
files. I do it like this:

$(document).ready(function() {
$.post("streetnames.html",function(data,text) {
var txt = data.split(",");
$("#street").autocomplete(txt); });
});

Now I wanted a dynamically populated search box. Then I started on
sending requests with a parameter to the server. I looked at the demo
page and found several examples and options to use, but I can't find a
separate list of options and their explanation, I would like to. Now I
have some trouble with the results. The html file receives the
parameter put in the input box and returns again a string, comma
separated. The data returned are OK and the filtering works
dynamically. The problem now is that the results are just crammed into
the resultbox and I can only select the first result. I am using the
same files as above. What am I missing here?

The code goes like this:

$(document).ready(function() {

   function formatResult(data,value) {
                txt = value.split(",");
                return txt[0];
   }
      $("#street").autocomplete("streetnames2.html",{width:
300,selectFirst:false,formatResult: formatResult});

});