/* Image Preloader */
function ImagePreloader(images,callback)
{
	/* store the callback */
	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.source = image;

	/* assign the .src property of the Image object */
	oImage.src = image;
}
ImagePreloader.prototype.onComplete = function()
{
	this.nProcessed++;
	if ( this.nProcessed == this.nImages )
		this.callback(this.aImages);
}
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();
}