String.prototype.trim = function ()
{
    return this.replace(/^\s*/, "").replace(/\s*$/, "");
}

var current_language = 0;

function checkMailForm(lang)
{
    current_language = lang;
    var txtZinojums = "Ziņojums";
    var txtEpasts = "Tavs e-pasts";
    var txtVards = "Tavs vārds";
    if(lang == 1)
    {
        txtZinojums = "Message";
        txtEpasts = "Your e-mail";
        txtVards = "Your name";
    }
    var result = true;
    var name = document.getElementById("name");
    var label_name = document.getElementById("label_name");
    var email = document.getElementById("email");
    var label_email = document.getElementById("label_email");
    var message = document.getElementById("message");
    var label_message = document.getElementById("label_message");
    if(name && email && message && label_name && label_email && label_message)
    {
        if(!checkField(message, label_message, txtZinojums)) result = false;
        if(!checkField(email, label_email, txtEpasts)) result = false;
        if(!checkField(name, label_name, txtVards)) result = false;
        return result;
    }
    else
    {
        return false;
    }
}

function checkField(field, label, caption)
{
    
    if(field.value.trim() == "")
    {
        label.style.color = "Fuchsia";
        if (current_language == 1)
            label.innerHTML = caption + " (mandatory):";
        else
            label.innerHTML = caption + " (obligāts):";
        field.focus();
        return false;
    }
    else
    {
        label.style.color = "Black";
        label.innerHTML = caption + ":";
        return true;
    }
}


function checkNewsletterForm(lang)
{
    current_language = lang;
    var message = "Tavs e-pasts";
    if(lang == 1)
    {
        message = "Your e-mail";
    }
    var email = document.getElementById("news_email");
    var label_email = document.getElementById("label_news_email");
    return checkField(email, label_email, message);
}


function showPresentation(path)
{
    window.open('http://www.pecha-kucha.lv/prezentacija.php?show=bildes/prezentacijas' + path + '&slide=01', '_blank', 'menubar=1,resizable=1,width=420,height=370');
}


// inicializee bilzu raadiishanas parametrus
var kopejaisPasakumuSkaits = 18; // !!!
var currentVol1Picture = new Array(kopejaisPasakumuSkaits);
for(i=0; i<kopejaisPasakumuSkaits ; i++)
{
    currentVol1Picture[i] = 1;
}
var bilzuSkaitsPasakuma = new Array(kopejaisPasakumuSkaits);
bilzuSkaitsPasakuma[0] = 20;
bilzuSkaitsPasakuma[1] = 27;
bilzuSkaitsPasakuma[2] = 38;
bilzuSkaitsPasakuma[3] = 28;
bilzuSkaitsPasakuma[4] = 1;
bilzuSkaitsPasakuma[5] = 65;
bilzuSkaitsPasakuma[6] = 62;
bilzuSkaitsPasakuma[7] = 74;
bilzuSkaitsPasakuma[8] = 22;
bilzuSkaitsPasakuma[9] = 20;
bilzuSkaitsPasakuma[10] = 74;
bilzuSkaitsPasakuma[11] = 61;
bilzuSkaitsPasakuma[12] = 74;
bilzuSkaitsPasakuma[13] = 43;
bilzuSkaitsPasakuma[14] = 90;
bilzuSkaitsPasakuma[15] = 15;
bilzuSkaitsPasakuma[16] = 81;
bilzuSkaitsPasakuma[17] = 87;
// !!!

function showBackPicture(vol)
{
    vol--;
    currentVol1Picture[vol]--;
    if(currentVol1Picture[vol] < 1) currentVol1Picture[vol] = bilzuSkaitsPasakuma[vol];
    document.getElementById("bildesVol" + (vol+1)).src = "bildes/arhivs" + (vol+1) + "/rigavol" + (vol+1) + "_" + currentVol1Picture[vol] + ".jpg";
}

function showNextPicture(vol)
{
    vol--;
    currentVol1Picture[vol]++;
    if(currentVol1Picture[vol] > bilzuSkaitsPasakuma[vol]) currentVol1Picture[vol] = 1;
    document.getElementById("bildesVol" + (vol+1)).src = "bildes/arhivs" + (vol+1) + "/rigavol" + (vol+1) + "_" + currentVol1Picture[vol] + ".jpg";
}