function ImagePreloader(images,call_back){
	this.call_back = call_back;
	this.nLoaded = 0;
	this.nProcessed = 0;
	this.aImages = new Array;
	this.nImages = images.length;
	for (var i=0;i<images.length;i++) this.preload(images[i]);
}
ImagePreloader.prototype.preload = function(image){
	var oImage = new Image;
	this.aImages.push(oImage);
	oImage.onload = ImagePreloader.prototype.onload;
	oImage.onerror = ImagePreloader.prototype.onerror;
	oImage.onabort = ImagePreloader.prototype.onabort;
	oImage.oImagePreloader = this;
	oImage.bLoaded = false;
	oImage.src = image;
}
ImagePreloader.prototype.onComplete = function(){
	this.nProcessed++;
	if (this.nProcessed==this.nImages) this.call_back(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();
}