/**
 * Navega para o proximo slide de obras da pagina inicial
 */
this.actualSlide = 0;
function showNextSlide(){
    var actualAba = this.actualAbaActive;
    
    if(actualAba == 'breveLancamento')
        actualAba = document.getElementById('divBreveLancamentoContent');
    else if(actualAba == 'lancamento')
        actualAba = document.getElementById('divLancamentoContent');
    else if(actualAba == 'emObras')
        actualAba = document.getElementById('divEmObrasContent');
    else if(actualAba == 'pronto')
        actualAba = document.getElementById('divProntoContent');
        
    
    
    if((actualAba.children.length - this.actualSlide) > 1){
        
        var slideNext = this.actualSlide + 1;
        var slidePrevious = this.actualSlide;
        
        actualAba.children[slideNext].style.visibility = 'visible';
        actualAba.children[slidePrevious].style.visibility = 'hidden';
        
        this.actualSlide++;
    }
    
}

function showPreviouSlide(){
    var actualAba = this.actualAbaActive;
    
    if(actualAba == 'breveLancamento')
        actualAba = document.getElementById('divBreveLancamentoContent');
    else if(actualAba == 'lancamento')
        actualAba = document.getElementById('divLancamentoContent');
    else if(actualAba == 'emObras')
        actualAba = document.getElementById('divEmObrasContent');
    else if(actualAba == 'pronto')
        actualAba = document.getElementById('divProntoContent');
        
    
    
    if(this.actualSlide > 0){
        var slideNext = this.actualSlide;
        var slidePrevious = this.actualSlide - 1;
        
        actualAba.children[slideNext].style.visibility = 'hidden';
        actualAba.children[slidePrevious].style.visibility = 'visible';
        
        this.actualSlide--;
    }
    
}

/**
 * Ativa uma das abas da pagina inicial
 */
function activeAba(aba){
    
    var actualAba           = '';
    var abaBreveLancamento  = document.getElementById('divBreveLancamentoContent');
    var abaLancamento       = document.getElementById('divLancamentoContent');
    var abaEmObras          = document.getElementById('divEmObrasContent');
    var abaPronto           = document.getElementById('divProntoContent');
    
    abaBreveLancamento.style.display    = 'none';
    abaLancamento.style.display         = 'none';
    abaEmObras.style.display            = 'none';
    abaPronto.style.display             = 'none';
    
    switch(aba){
        case 'breveLancamento':
            abaBreveLancamento.style.display = 'block';
        break;
        
        case 'lancamento':
            abaLancamento.style.display = 'block';
        break;
        
        case 'emObras':
            abaEmObras.style.display = 'block';
        break;
        
        case 'pronto':
            abaPronto.style.display = 'block';
        break;
    }
    
    this.actualAbaActive = aba;
    activeAbaBtn();
}

/**
 * Ativa o botao da Aba
 */
this.actualAbaActive = 'emObras';
function activeAbaBtn(btnId){
    
    var abaBreveLancamento  = document.getElementById('divBreveLancamentoContent');
    var abaLancamento       = document.getElementById('divLancamentoContent');
    var abaEmObras          = document.getElementById('divEmObrasContent');
    var abaPronto           = document.getElementById('divProntoContent');
    
    //var btn = document.getElementById(btnId);
    
    var btnBreveLancamento  = document.getElementById('titleBreveLancamentoObraHome');
    var btnLancamento       = document.getElementById('titleLancamentoObraHome');
    var btnEmObras          = document.getElementById('titleEmObrasObraHome');
    var btnPronto           = document.getElementById('titleProntoMorarObraHome');
    
    /**
     * desliga todos os botoes
     */
    btnBreveLancamento.src  = 'images/titleBreveLancamentoObraHome.jpg';
    btnLancamento.src       = 'images/titleLancamentoObraHome.jpg';
    btnEmObras.src          = 'images/titleEmObrasObraHome.jpg';
    btnPronto.src           = 'images/titleProntoMorarObraHome.jpg';
    
    if(this.actualAbaActive == 'breveLancamento')
        btnBreveLancamento.src = 'images/titleBreveLancamentoObraHomeOn.jpg';

    else if(this.actualAbaActive == 'lancamento')
        btnLancamento.src = 'images/titleLancamentoObraHomeOn.jpg';

    else if(this.actualAbaActive == 'emObras')
        btnEmObras.src = 'images/titleEmObrasObraHomeOn.jpg';

    else if(this.actualAbaActive == 'pronto')
        btnPronto.src = 'images/titleProntoMorarObraHomeOn.jpg';
    
}