loadImages: function(imgURL,imageList){

for (var i = 0; i <= imageList.length - 1; ++i){
  preLoad.yourImages[i] = imgURL + imageList[i];
}


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

document.getElementById("imgPlaceHolder").appendChild(preLoad.preImages[i]);