/**
 * inisialisasi image buffer
 */
var fotoList = new Array(TOTAL_FOTO);
var fotoTag = new Array(TOTAL_IMAGE_PER_FOTO);

function init_buffer_image(){
    for(var i = 0; i < TOTAL_FOTO; i++){
        fotoList[i] = new Array(TOTAL_IMAGE_PER_FOTO);
        for(var j=0; j< TOTAL_IMAGE_PER_FOTO; j++){
            fotoList[i][j] = new Image();
            fotoList[i][j].src = "componentImage.php?com=photoFlash&d="+FOTO_LIST_DIR[i]+"&f="
            + FOTO_LIST_FILE_PREFIX[i] + ((j < 9)?"0":"") + (j + 1) + ".jpg";
        }
    }

    for(j=0; j< TOTAL_IMAGE_PER_FOTO; j++){
        fotoTag[j] = document.getElementById("foto_"+(j + 1));
        fotoTag[j].src = fotoList[0][j].src;
    }
    
    clearInterval(timer);
    animating_foto();
}


/**
 * animation
 */

var timer;
var loadedFoto = false;
var idx_foto = 0;
var idx_random = 0;
var idx_array_random = Math.floor(Math.random() * TOTAL_FOTO);
var idx_foto_random = Math.floor(Math.random() * TOTAL_FOTO_RANDOM);

function animating_foto(){

    try{
        if(fotoList[FOTO_RANDOM[idx_foto_random][idx_foto]][IMAGE_RANDOM[idx_array_random][idx_random]].complete){

            fotoTag[IMAGE_RANDOM[idx_array_random][idx_random]].src =
            fotoList[FOTO_RANDOM[idx_foto_random][idx_foto]][IMAGE_RANDOM[idx_array_random][idx_random]].src;

            idx_random += 1;

            if(idx_random < 24){
                clearInterval(timer);
                timer = setInterval("animating_foto()", 200);
            }else{
                loadedFoto = true;
            }
        }else{
            clearInterval(timer);
            timer = setInterval("animating_foto()", 10);
        }
    }catch(e){
//        alert(idx_foto_random+" : "+idx_foto);
    }
    if(loadedFoto){
        idx_foto = (idx_foto < TOTAL_FOTO - 1)?(idx_foto+1):0;

        if(idx_foto == 0){
            idx_foto_random = (idx_foto_random + Math.ceil(Math.random() * (TOTAL_FOTO_RANDOM - 1))) % TOTAL_FOTO_RANDOM;
        }

        loadedFoto = false;
        idx_random = 0;
        idx_array_random = (idx_array_random + Math.ceil(Math.random() * (TOTAL_FOTO - 1))) % TOTAL_FOTO;
        clearInterval(timer);
        timer = setInterval("animating_foto()", 5000);
    }
}