As you have no code i am giving you an example and i hope you have that you want:

Let's say this is your HTML button:

<div class=button >My button</div>

Let's give it some styling

.button { 

float:left;

color: #333;

width: auto;

text-align: center;

padding: 0 10px;

background: #f0f0f0;

line-height: 1.5em;

height: auto;

}

And let's style your active button

.button.active {

background: #ea0000;

color: #fff;

}

Now that you have to do is to write a small jquery function:

<script>

$('.button').click(function(){

    if($(this).hasClass('active')){

        $(this).removeClass('active')

    } else {

        $(this).addClass('active')

    }

});

</script>

And here you are ;-)

Heres my example on fiddle also: http://jsfiddle.net/S7kJ2/

Take care ;)