[web2py] bug in function ajax?

[Jose]

Any changes in the function ajax of the application scaffold?

The following code works in an old application

<form>
    <input type="hidden" id="id" value="" />
</form>

<div id="submenu">
{{for r in rows:}}
    <span onclick="$('#id').attr('value','{{=r.id}}');
ajax('bg_myfunction', ['id'], 'target');">
        {{=r.name}}
    </span>
{{pass}}
</div>
<div id="target"></div>

def bg_myfunction():
    id = request.vars.id
    return id

But in a new, created from the application of scaffolding does not
work, request.vars is always None.

the old function ajax (works fine) is:
function ajax(u,s,t) {
  var query="";
  for(i=0; i<s.length; i++) {
     if(i>0) query=query+"&";
     query=query+encodeURIComponent(s[i])
+"="+encodeURIComponent(document.getElementById(s[i]).value);
  }
  jQuery.ajax({type: "POST", url: u, data: query, success:
function(msg) { if(t==':eval') eval(msg); else
document.getElementById(t).innerHTML=msg; } });
}

the new function ajax is:
function ajax(u,s,t) {
    query = '';
    if (typeof s == "string") {
        d = jQuery(s).serialize();
        if(d){ query = d; }
    } else {
        pcs = [];
        for(i=0; i<s.length; i++) {
            q = jQuery("#"+s[i]).serialize();
            if(q){pcs.push(q);}
        }
        if (pcs.length>0){query = pcs.join("&");}
    }
    jQuery.ajax({type: "POST", url: u, data: query, success:
function(msg) { if(t) { if(t==':eval') eval(msg); else jQuery("#" +
t).html(msg); } } });
}

is a new way of working with the new function or it has a bug?

Regards,
Jose