jQuery - trapping tab select event

Question

I'm a jQuery noob and I'm trying to figure out how to trap the tab selected event. Using jQuery 1.2.3 and corresponding jQuery UI tabs (not my choice and I have no control over it). It's a nested tab with the first level div name - tabs. This is how I initialized the tabs

$(function() {
       $('#tabs ul').tabs();
});

$(document).ready(function(){
    $('#tabs ul').tabs('select', 0); 
}); 

I'm not able to figure out how to trap any of the events or properties (selected tab, when tab clicked, etc). Would appreciate any help on this...

I tried things like:

$('#tabs ul').bind('tabsselect', function(event, ui) {
    selectedTab = ui.index;
    alert('selectedTab : ' + selectedTab);
});

              (OR)

$('#tabs').bind('tabsselect', function(event, ui) {

with no success.

Below is the markup

<div id="tabs">
<UL>
    <LI><A href="#fragment-1"><SPAN>Tab1</SPAN></A></LI>
    <LI><A href="#fragment-2"><SPAN>Tab2</SPAN></A></LI>
    <LI><A href="#fragment-3"><SPAN>Tab3</SPAN></A></LI>
    <LI><A href="#fragment-4"><SPAN>Tab4</SPAN></A></LI>
</UL>

<DIV id=fragment-1>
<UL>
    <LI><A href="#fragment-1a"><SPAN>Sub-Tab1</SPAN></A></LI>
    <LI><A href="#fragment-1b"><SPAN>Sub-Tab2</SPAN></A></LI>
    <LI><A href="#fragment-1c"><SPAN>Sub-Tab3</SPAN></A></LI>
</UL>
</DIV>
.
.
.

</DIV>

Answer 1

it seems the old's version's of jquery ui don't support select event anymore.

This code will work with new versions:

$('.selector').tabs({
                    activate: function(event ,ui){
                        //console.log(event);
                        console.log(ui.newTab.index());
                    }
});