var a = new Array();
var b = new Array();

function rand() {
  var str = new String();
  for(i=0;i<9;i++) {
    a[i] = Math.round(Math.random());
    b[i] = new String(a[i]);
    str = str+b[i];
  };
  return str;
}

function ni(arg) {
  var img = new Image(); img.src = arg;
  return img;
}

function clock() {
  var t = Math.ceil(120000*Math.random()+5000);
  return t;
}

// loading images
var dir = "/img/";
var memo = new Array(16);
var memo_num = 0

function loadImg() {
  if(memo_num<=0) {
    for(x=0;x<16;x++) {
    memo[x] = ni(dir+"tab60_png.php?d="+rand());
    memo_num = x;
    };
  };
}

// changing images
function changeImg_1() {
  if(memo_num>=0) { document.getElementById('im1').src = memo[memo_num].src; memo_num--; };
  loadImg();
  time1 = setTimeout('changeImg_1()', clock());
}

function changeImg_2() {
  if(memo_num>=0) { document.getElementById('im2').src = memo[memo_num].src; memo_num--; };
  loadImg();
  time2 = setTimeout('changeImg_2()', clock());
}

function changeImg_3() {
  if(memo_num>=0) { document.getElementById('im3').src = memo[memo_num].src; memo_num--; };
  loadImg();
  time3 = setTimeout('changeImg_3()', clock());
}

function changeImg_4() {
  if(memo_num>=0) { document.getElementById('im4').src = memo[memo_num].src; memo_num--; };
  loadImg();
  time4 = setTimeout('changeImg_4()', clock());
}

function changeImg_5() {
  if(memo_num>=0) { document.getElementById('im5').src = memo[memo_num].src; memo_num--; };
  loadImg();;
  time5 = setTimeout('changeImg_5()', clock());
}

function changeImg_6() {
  if(memo_num>=0) { document.getElementById('im6').src = memo[memo_num].src; memo_num--; };
  loadImg();
  time6 = setTimeout('changeImg_6()', clock());
}

function changeImg_7() {
  if(memo_num>=0) { document.getElementById('im7').src = memo[memo_num].src; memo_num--; };
  loadImg();
  time7 = setTimeout('changeImg_7()', clock());
}

function changeImg_8() {
  if(memo_num>=0) { document.getElementById('im8').src = memo[memo_num].src; memo_num--; };
  loadImg();
  time8 = setTimeout('changeImg_8()', clock());
}

// starting
time1 = time2 = time3 = time4 = time5 = time6 = time7 = time8 = null;

for(x=0;x<16;x++) {
memo[x] = ni(dir+"tab60_png.php?d="+rand());
memo_num = x;
}

function start() {
  if(document.getElementById) {
    changeImg_1(); thisbg_OFF('td1');
    changeImg_2(); thisbg_OFF('td2');
    changeImg_3(); thisbg_OFF('td3');
    changeImg_4(); thisbg_OFF('td4');
    changeImg_5(); thisbg_OFF('td5');
    changeImg_6(); thisbg_OFF('td6');
    changeImg_7(); thisbg_OFF('td7');
    changeImg_8(); thisbg_OFF('td8');
  } else {
    setTimeout('start()', 100)
  };
}