function next(start){
    if ((document.getElementById("nav_bar").offsetLeft > (parseInt(start) - 240)) && (document.getElementById("nav_bar").offsetLeft > -240)) {
        t = setTimeout("move_next(\'" + start + "\')", 10);
    }
}

function move_next(start){
    document.getElementById("nav_bar").style.left = (document.getElementById("nav_bar").offsetLeft - 10) + "px";
    next(start);
}

function prev(start){
    if ((document.getElementById("nav_bar").offsetLeft < (parseInt(start) + 240)) && (document.getElementById("nav_bar").offsetLeft < 0)) {
        t = setTimeout("move_prev(\'" + start + "\')", 10);
    }
}

function move_prev(start){
    document.getElementById("nav_bar").style.left = (document.getElementById("nav_bar").offsetLeft + 10) + "px";
    prev(start);
}

function change(port, url){
    switch (port) {
        case 'gugcy':
            document.getElementById("bigImageUrl").href = "http://acctuamedia.com/sites/gugcy";
            document.getElementById("port_url").innerHTML = '<a style=\'cursor: pointer;\' onclick=\'window.open(\"http://acctuamedia.com/sites/gugcy")\'>www.gugcy.com</a>';
            document.getElementById("port_company").innerHTML = 'Gugcy';
            break;
			
        case 'peixe-gato':
            document.getElementById("bigImageUrl").href = "http://acctuamedia.com/sites/peixe-gato";
            document.getElementById("port_url").innerHTML = '<a style=\'cursor: pointer;\' onclick=\'window.open(\"http://acctuamedia.com/sites/peixe-gato")\'>www.peixegato.com</a>';
            document.getElementById("port_company").innerHTML = 'Peixe Gato';
            break;
            
        case 'mnoi':
            document.getElementById("bigImageUrl").href = "http://www.melloneves.com.br";
            document.getElementById("port_url").innerHTML = '<a style=\'cursor: pointer;\' onclick=\'window.open(\"http://www.melloneves.com.br\")\'>www.melloneves.com.br</a>';
            document.getElementById("port_company").innerHTML = 'Mello Neves Odontology Institute ';
			break;
            
        case 'gfi':
            document.getElementById("bigImageUrl").href = "http://www.gfihealthconsulting.com";
            document.getElementById("port_url").innerHTML = '<a style=\'cursor: pointer;\' onclick=\'window.open(\"http://www.gfihealthconsulting.com\")\'>www.gfihealthconsulting.com</a>';
            document.getElementById("port_company").innerHTML = 'Goldberg & Facktor, Inc.';
            break;
            
        case 'cactus':
            document.getElementById("bigImageUrl").href = "http://acctuamedia.com/sites/cactus";
            document.getElementById("port_url").innerHTML = '<a style=\'cursor: pointer;\' onclick=\'window.open(\"http://acctuamedia.com/sites/cactus")\'>www.cactusjeans.com</a>';
            document.getElementById("port_company").innerHTML = 'Cactus Company Fashion Clothes';
            break;
            
        case 'ohashi':
            document.getElementById("bigImageUrl").href = "http://acctuamedia.com/sites/ohashi";
            document.getElementById("port_url").innerHTML = '<a style=\'cursor: pointer;\' onclick=\'window.open(\"http://acctuamedia.com/sites/ohashi")\'>www.restauranteohashi.com</a>';
            document.getElementById("port_company").innerHTML = 'Ohashi Restaurant';
            break;
            
        case 'telemetry':
            document.getElementById("bigImageUrl").href = "www.etelemetry.com";
            document.getElementById("port_url").innerHTML = '<a style=\'cursor: pointer;\' onclick=\'window.open(\"http://www.restauranteohashi.com\")\'>www.restauranteohashi.com</a>';
            document.getElementById("port_company").innerHTML = 'Locate by Telemetry';
            break;
    }
    document.getElementById("port_text").innerHTML = document.getElementById(port).innerHTML;
    document.getElementById('port_img').src = url + 'img/portfolio/' + port + '.jpg';
    changeImg(port);
}

function changeImg(img){
    if (document.getElementById('port_img').complete) {
        document.getElementById('port_img_div').display = 'none';
    }
}