function ImagePreloader( images ) {
	// 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;

	// assign the .src property of the Image object
	oImage.src = image;
}

ImagePreloader.prototype.onComplete = function() {
	this.nProcessed++;
}

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();
}