var interval;

$(document).ready(function() {

    $('.conceptual img#conceptual_0').removeClass('hide');

    $('.nav-conceptual li').click(function() {
        $('.nav-conceptual li').removeClass('on');
        $(this).addClass('on');

        clickTriggerConceptual($(this).attr('rel'));

    });

    $('.nav-conceptual li:eq(0)').trigger('click');
});


function clickTriggerConceptual(indice) {
    clearInterval(interval);

    /* show image */
    $('.conceptual img').addClass('hide');
    $('.conceptual img#conceptual_'+indice).removeClass('hide');


    indice++;
    if(indice > 3) indice = 0;

    interval = setInterval("clickT("+indice+")",9000);
}

function clickT(indice) {
    $('.nav-conceptual li:eq('+indice+')').trigger('click');
}