var base = "http://sauna-joe.nl/img/";

function arrowMouseOver(obj) {
    obj.src = base + 'go-' + obj.id + '-pink.png'
}

function arrowMouseOut(obj) {
    obj.src = base + 'go-' + obj.id + '-white.png'
}

function changePic(obj) {
    document.getElementById('currentpic').src = obj.src.slice(0,24) + obj.src.slice(25,31);
}

function changeThumbs(obj) {
    if (obj.id == "next") {
        if (document.getElementById('thumb0').src == base + "s00.jpg") {
            document.getElementById('thumb0').src = base + "s08.jpg";
            document.getElementById('thumb1').src = base + "s09.jpg";
            document.getElementById('thumb2').src = base + "s10.jpg";
            document.getElementById('thumb3').src = base + "s11.jpg";
            document.getElementById('thumb4').src = base + "s12.jpg";
            document.getElementById('thumb5').src = base + "s13.jpg";
            document.getElementById('thumb6').src = base + "s14.jpg";
            document.getElementById('thumb7').src = base + "s15.jpg";
        }
        else if (document.getElementById('thumb0').src == base + "s08.jpg") {
            document.getElementById('thumb0').src = base + "s16.jpg";
            document.getElementById('thumb1').src = base + "s17.jpg";
            document.getElementById('thumb2').src = base + "s18.jpg";
            document.getElementById('thumb3').src = base + "s19.jpg";
            document.getElementById('thumb4').src = base + "s20.jpg";
            document.getElementById('thumb5').src = base + "s21.jpg";
            document.getElementById('thumb6').src = base + "s22.jpg";
            document.getElementById('thumb7').src = base + "s23.jpg";
        }
        else {
            document.getElementById('thumb0').src = base + "s00.jpg";
            document.getElementById('thumb1').src = base + "s01.jpg";
            document.getElementById('thumb2').src = base + "s02.jpg";
            document.getElementById('thumb3').src = base + "s03.jpg";
            document.getElementById('thumb4').src = base + "s04.jpg";
            document.getElementById('thumb5').src = base + "s05.jpg";
            document.getElementById('thumb6').src = base + "s06.jpg";
            document.getElementById('thumb7').src = base + "s07.jpg";
        }
    }  
    else if (obj.id == "previous") {
        if (document.getElementById('thumb0').src == base + "s00.jpg") {
            document.getElementById('thumb0').src = base + "s16.jpg";
            document.getElementById('thumb1').src = base + "s17.jpg";
            document.getElementById('thumb2').src = base + "s18.jpg";
            document.getElementById('thumb3').src = base + "s19.jpg";
            document.getElementById('thumb4').src = base + "s20.jpg";
            document.getElementById('thumb5').src = base + "s21.jpg";
            document.getElementById('thumb6').src = base + "s22.jpg";
            document.getElementById('thumb7').src = base + "s23.jpg";
        }
        else if (document.getElementById('thumb0').src == base + "s08.jpg") {
            document.getElementById('thumb0').src = base + "s00.jpg";
            document.getElementById('thumb1').src = base + "s01.jpg";
            document.getElementById('thumb2').src = base + "s02.jpg";
            document.getElementById('thumb3').src = base + "s03.jpg";
            document.getElementById('thumb4').src = base + "s04.jpg";
            document.getElementById('thumb5').src = base + "s05.jpg";
            document.getElementById('thumb6').src = base + "s06.jpg";
            document.getElementById('thumb7').src = base + "s07.jpg";
        }
        else {
            document.getElementById('thumb0').src = base + "s08.jpg";
            document.getElementById('thumb1').src = base + "s09.jpg";
            document.getElementById('thumb2').src = base + "s10.jpg";
            document.getElementById('thumb3').src = base + "s11.jpg";
            document.getElementById('thumb4').src = base + "s12.jpg";
            document.getElementById('thumb5').src = base + "s13.jpg";
            document.getElementById('thumb6').src = base + "s14.jpg";
            document.getElementById('thumb7').src = base + "s15.jpg";
        }  
    }
}