jQuery用另一个类替换一个类

I have this jQuery and I'm changing styles in it but I've heard that the correct way to do it is to create a separate style and just replace classes with jQuery. Can you explain me how to do it correctly:

$('.corpo_buttons_asia').click(function() {           
    $('.info').css('visibility', 'hidden');
    $('.info2').css('visibility', 'visible');
    $(this).css('z-index', '20');
    $(this).css('background-color', 'rgb(23,55,94)');
    $(this).css('color', '#FFF');
    $('.corpo_buttons_global').css('background-color', 'rgb(197,197,197)');
    $('.corpo_buttons_global').css('color', '#383838');         
}); 

$('.corpo_buttons_global').click(function() { 
    $('.info').css('visibility', 'visible');
    $('.info2').css('visibility', 'hidden');
    $(this).css('background-color', 'rgb(23,55,94)');
    $(this).css('color', '#FFF');
    $('.corpo_buttons_asia').css('z-index', '2');
    $('.corpo_buttons_asia').css('background-color', 'rgb(197,197,197)');
    $('.corpo_buttons_asia').css('color', '#383838');
}); 

So instead of using .css() all the time I can create another class and just replace it with jQuery.