/*
**************************************
* Preloader Class v1.0               *
* Autor: Carlos R. L. Rodrigues      *
**************************************
*/
Preloader = function(){
	var o = this;
	o.img = [];	o.r = []; o.g = [];
	o.n = {}; o.total = o.loaded = 0;
};
Preloader.prototype.add = function(i, g){
	var o = this, n = (o.g[o.total] = [g || "general"])[0];
	(g = o.n)[n] >= 0 ? ++g[n] : g[n] = 1;
	o.img[o.total++] = i;
};
Preloader.prototype.load = function(){
	var o = this, p = o.img, l = p.length, a, g = o.g;
	while(l--){
		(g[l][1] = a = new Image()).src = p[a.i = l];
		a.onload = function(){
			if(o.r[this.i]) return;
			!--o.n[g[this.i][(o.r[this.i] = 1) - 1]] && o.onGroupComplete && o.onGroupComplete(g[this.i][0]);
			o.onImageComplete && o.onImageComplete(this);
			(++o.loaded == o.total) && o.onComplete && o.onComplete();
		};
		(a.fileSize !== undefined ? a.fileSize > -1 : a.width) && a.onload();
		a.onerror = function(){
			o.onImageError && o.onImageError(this);
		}
	}
};
Preloader.prototype.getImagesByGroup = function(n){
	var g = this.g, i = [], p = 0, n = n || "general";
	for(var j = g.length; j; g[--j][0] == n && (i[p++] = g[j][1]));
	return i;
};