// JavaScript Document
/*credits: Andrés Fernández, based in http://ajaxcookbook.org/transitions-animation-effects/ */
function Transition(curva,ms,callback) {
	this.ant=0.01;
	this.done_=false;
	var _this=this;
	this.start=new Date().getTime();
	this.run=function(){
		setTimeout(function(){
				if(!_this.next()){
					callback(1);
					_this.done_=true;
					window.globalIntervalo=0;
					return;
				}
				callback(_this.next());
				_this.run();
			},13);
	}
	this.next=function(){
		var now=new Date().getTime();
		if((now-this.start)>ms)
			return false;
		return this.ant=curva((now-this.start+.001)/ms,this.ant);
	}
}

function SineCurve(percentage) {
	return (1 - Math.cos(percentage * Math.PI)) / 2;
}

function easing(percentage){
	var delta = 1 - .001; 
    var stepp = .001+(Math.pow(((1 / 1) * percentage), .3) * delta); 
    return stepp
}

function LinearCurve(percentage) {
	return percentage;
}
function BounceEase(p) { if (p <= 0.6) { return Math.pow(p * 5 / 3, 2); } else { return Math.pow((p - 0.8) * 5, 2) * 0.4 + 0.6 } }