function playButtonOnClick(kappale, levy) {
    var sanat;
    var button;
    var audio;
    
    if (levy != '') {
        sanat=document.getElementById(levy + '_sanat');
    }
    
    audio = document.getElementById(kappale);
    button = document.getElementById(kappale + '_button');
    if(button.title=='Stop') {
        audio.pause();
        audio.currentTime=0;
        button.src='images/play12.png';
        button.title='Play';
        if (sanat) {
            if (sanat.style.visibility=='hidden') {
                sanat.innerHTML='<p class="' + levy + '_sanat1">Sanat</p>';
            }
        }
    }
    else {
        stopAll();
        audio.play();
        button.src='images/stop12.png';
        button.title='Stop';
        if (sanat) {
            sanat.innerHTML=document.getElementById(kappale + '_sanat').innerHTML;
        }
    }
}

function audioOnPlay(kappale) {
    /*button = document.getElementById(kappale + '_button');
    button.src='images/stop12.png';
    button.title='Stop';*/
}

function audioOnPause(kappale) {

    /*button = document.getElementById(kappale + '_button');
    document.getElementById(kappale).currentTime=0;

    button.src='images/play12.png';
    button.title='Play';*/

}

function audioOnEnded(kappale) {
    var button;
    var audio;
    
    audio = document.getElementById(kappale);
    button = document.getElementById(kappale + '_button');
    
    audio.pause();
    audio.currentTime=0;
    //button.src='images/play12.png';
    //button.title='Play';
}

function stopAll() {
    var button;
    var audio;
    var children = document.getElementById('sisalto').getElementsByTagName('audio');
    var elements = [], child;
    
    for (var i = 0, length = children.length; i < length; i++) {
        child = children[i];
        elements.push(child);
    }
    
    for(var i in elements) {
        button = document.getElementById(elements[i].id + '_button');
        if (button.title=='Stop') {
            audio = document.getElementById(elements[i].id);
            audio.pause();
            audio.currentTime=0;
            button.title='Play';
            button.src='images/play12.png';
        }
    }
}