var speed = 3500
var transitionDuration = 4
var imgArray = new Array() // don't touch this
imgArray[0] = './images/before_after/before_01.jpg';
imgArray[1] = './images/before_after/after_01.jpg';
imgArray[2] = './images/before_after/before_02.jpg';
imgArray[3] = './images/before_after/after_02.jpg';
imgArray[4] = './images/before_after/before_03.jpg';
imgArray[5] = './images/before_after/after_03.jpg';
imgArray[6] = './images/before_after/before_04.jpg';
imgArray[7] = './images/before_after/after_04.jpg';
imgArray[8] = './images/before_after/before_05.jpg';
imgArray[9] = './images/before_after/after_05.jpg';
imgArray[10] = './images/before_after/before_06.jpg';
imgArray[11] = './images/before_after/after_06.jpg';
imgArray[12] = './images/before_after/before_07.jpg';
imgArray[13] = './images/before_after/after_07.jpg';
imgArray[14] = './images/before_after/before_08.jpg';
imgArray[15] = './images/before_after/after_08.jpg';
imgArray[16] = './images/before_after/before_09.jpg';
imgArray[17] = './images/before_after/after_09.jpg';



var timeout;
var p = imgArray.length;
var preLoad = new Array()

var j = get_random();
if (!isEven(j)) {
    j=j-1;
    if (j < 0) {
        j=0;
    }
}

for (i = 0; i < imgArray.length; i++) {
   preLoad[i] = new Image();
   preLoad[i].src = imgArray[i];
}

function isEven(value){
    if (value%2 == 0)
        return true;
    else
        return false;
}

function startTransitions(){
   if (document.all){
      document.images.TransitionImage.style.filter="blendTrans(duration=transitionDuration)"
      document.images.TransitionImage.filters.blendTrans.Apply()      
   }

   document.images.TransitionImage.src = preLoad[j].src

   if (document.all){
      document.images.TransitionImage.filters.blendTrans.Play()
   }
   j = j + 1
   if (j > (imgArray.length-1)) j=0
   timeout = setTimeout('startTransitions()', speed)
}

function get_random()
{
    var ranNum= Math.floor(Math.random()*imgArray.length);
    return ranNum;
}