var currentpointer = 0;

var slidespointer;

function imageprev_m() {
    clearInterval(slidespointer);
    imageprev();
}

function imagenext_m() {
    clearInterval(slidespointer);
    imagenext();
}

function imageprev() {
    if (currentpointer > 0) {
        currentpointer--;
    }
    setimage(IA[currentpointer], TIA[currentpointer], CIA[currentpointer]);
}

function imagenext() {
    if (currentpointer < IA.length - 1) {
        currentpointer++;
    }
    else {
        currentpointer = 0;
    }
    setimage(IA[currentpointer], TIA[currentpointer], CIA[currentpointer]);
}

function setimage(argimageurl, argimagetitle, argimagecomment) {
    var imgm = document.getElementById('Image_main');
    if (imgm) {
        imgm.src = argimageurl;
    }
    var titl = document.getElementById('image_title');
    if (titl) {
        titl.innerHTML = argimagetitle;
    }
    var cmmnt = document.getElementById('image_comment');
    if (cmmnt) {
        cmmnt.innerHTML = argimagecomment;
    }
}

function show(argid) {
    var elem = document.getElementById(argid);
    if (elem) {
        elem.style.display = 'block';
    }
}
function hide(argid) {
    var elem = document.getElementById(argid);
    if (elem) {
        elem.style.display = 'none';
    }
}


function startslides() {
   slidespointer = setInterval(imagenext, 5000);
}