var timeout = 2000;
var imgAmount = 14;
var index=0;
var startIndex = 0;
var imgName = '';

var timeoutLab = 2000;
var imgAmountLab = 41;
var indexLab=0;
var startIndexLab = 1;
var imgNameLab = 'lab_';

function initGallery(fromImg, toImg, imageName) {
    startIndex = fromImg;
    imgAmount = toImg - fromImg;
    imgName = imageName;
    photoGallery();
}

function photoGallery()
{
    var imgNumber = index%imgAmount + startIndex;
    var imgNumberLab = indexLab%imgAmountLab + startIndexLab;
    document.getElementById('photo-gallery').src = "img/gallery/" + imgName + imgNumber + ".jpg";

    if (imgNumberLab == 8 || imgNumberLab == 9 || imgNumberLab == 34) {
        document.getElementById('photo-lab').height = 455;
    } else {
        document.getElementById('photo-lab').height = 200;
    }

    if (imgNumberLab!=9 && imgNumberLab!=12 && imgNumberLab!=21 && imgNumberLab!=28) {
        document.getElementById('photo-lab').src = "img/tehnika-lab/" + "lab_" + imgNumberLab + ".jpg";
    }
    index++;
    indexLab++;
	setTimeout("photoGallery()",timeout);
}