//=============================================================================
// Image Preloader
var nLoaded;
var nProcessed;
var nImages;
var callback;
var aImages;

function ImagePreloader(images,callback)
{
	// store the callback
	callback = callback;

	// initialize internal state.
	nLoaded = 0;
	nProcessed = 0;
	aImages = new Array;

	// record the number of images.
	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;
	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;
}
onComplete = function()
{
	nProcessed++;
	if ( nProcessed == nImages ) 
		onPreload(aImages,nImages);
}
ImagePreloader.prototype.onload = function()
{
	this.bLoaded = true;
	nLoaded++;
	onComplete();
}
ImagePreloader.prototype.onerror = function()
{
	this.bError = true;
	onComplete();
}
ImagePreloader.prototype.onabort = function()
{
	this.bAbort = true;
	onComplete();
}