// PRELOADER
function ImagePreloader(images, callBack){

   // store the call-back

   this.callBack = callBack;

 

   // initialize internal state.

   this.nLoaded = 0;

   this.nProcessed = 0;

   this.aImages = new Array;

 

   // record the number of images.

   this.nImages = images.length;

 

   // for each image, call preload()

   for ( var i = 0; i < images.length; i++ )
      this.preload(images[i]);

}


ImagePreloader.prototype.preload = function(image){
   // create new Image object and add to array
   var oImage = new Image;
   this.aImages.push(oImage);
  
   // set up event handlers for the Image object
   oImage.onload = ImagePreloader.prototype.onload;
   oImage.onerror = ImagePreloader.prototype.onerror;
   oImage.onabort = ImagePreloader.prototype.onabort;
 
   // assign pointer back to this.
   oImage.oImagePreloader = this;
   oImage.bLoaded = false;
  
   oImage.src = image;
}
ImagePreloader.prototype.onComplete = function()
{
  this.nProcessed++;
   if ( this.nProcessed == this.nImages )
   {
      this.callBack(this.aImages, this.nLoaded);
   }
}
ImagePreloader.prototype.onload = function()
{
   this.bLoaded = true;
   this.oImagePreloader.nLoaded++;
   this.oImagePreloader.onComplete();
}
ImagePreloader.prototype.onerror = function()
{
   this.bError = true;
   this.oImagePreloader.onComplete();
}
ImagePreloader.prototype.onabort = function()
{
   this.bAbort = true;
   this.oImagePreloader.onComplete();
}



///debug
function var_dump(arr,level) {
	var dumped_text = "";
	if(!level) level = 0;

	
	//The padding given at the beginning of the line.
	var level_padding = "";
	for(var j=0;j<level+1;j++) level_padding += "    ";
	
	if(typeof(arr) == 'object') { //Array/Hashes/Objects 
		for(var item in arr) {
			var value = arr[item];
			if(typeof(value) == 'object') { //If it is an array,
				dumped_text += level_padding + "'" + item + "' ...\n";
				dumped_text += var_dump(value,level+1);
			} else {
				dumped_text += level_padding + "'" + item + "' => \"" + value + "\"\n";
			}
		}
	} else { //Stings/Chars/Numbers etc.
		dumped_text = "===>"+arr+"<===("+typeof(arr)+")";
	}
	return dumped_text;
}