delay = 3000
imageNum = 1
// Preload animation images
theImages = new Array()
for(i = 1; i < 32; i++) {
   theImages[i] = new Image()
   theImages[i].src = "../postcard/kaart" + i + ".jpg"
}
function animate() {
   document.animation.src = theImages[imageNum].src
   imageNum++
   if(imageNum > 31) {
      imageNum = 1
   }
}
function slower() {
   delay+=100
   if(delay > 4000) delay = 4000
}
function faster() {
   delay-=100
   if(delay < 0) delay = 0
}