$(document).ready(function(){
$('#tabs div').hide(); // Hide all divs
$('#tabs div:first').show(); // Show the first div
$('.about-navigation ul li a:first').addClass('breadcrumb'); // Set the class of the first link to active
$('.about-navigation ul li a').click(function(){ //When any link is clicked
$('.about-navigation ul li a').removeClass('breadcrumb'); // Remove active class from all links
$(this).parent().addClass('breadcrumb'); //Set clicked link class to active
var currentTab = $(this).attr('href'); // Set variable currentTab to value of href attribute of clicked link
$('#tabs div').hide(); // Hide all divs
$(currentTab).show(); // Show div with id equal to variable currentTab
return false;
});
});