/*TERMS OF USE - EASING EQUATIONS
Open source under the BSD License.
Copyright (c) 2001 Robert Penner
JavaScript version copyright (C) 2006 by Philippe Maegerman
All rights reserved.
*/
function Delegate() {}
Delegate.create = function (o, f) {
var a = new Array() ;
var l = arguments.length ;
for(var i = 2 ; i < l ; i++) a[i - 2] = arguments[i] ;
return function() {
var aP = [].concat(arguments, a) ;
f.apply(o, aP);
}
}

Tween = function(obj, prop, func, begin, finish, duration, suffixe){
this.init(obj, prop, func, begin, finish, duration, suffixe)
}
var t = Tween.prototype;

t.obj = new Object();
t.prop='';
t.func = function (t, b, c, d) { return c*t/d + b; };
t.begin = 0;
t.change = 0;
t.prevTime = 0;
t.prevPos = 0;
t.looping = false;
t._duration = 0;
t._time = 0;
t._pos = 0;
t._position = 0;
t._startTime = 0;
t._finish = 0;
t.name = '';
t.suffixe = '';
t._listeners = new Array();	
t.setTime = function(t){
this.prevTime = this._time;
if (t > this.getDuration()) {
if (this.looping) {
this.rewind (t - this._duration);
this.update();
this.broadcastMessage('onMotionLooped',{target:this,type:'onMotionLooped'});
} else {
this._time = this._duration;
this.update();
this.stop();
this.broadcastMessage('onMotionFinished',{target:this,type:'onMotionFinished'});
}
} else if (t < 0) {
this.rewind();
this.update();
} else {
this._time = t;
this.update();
}
}
t.getTime = function(){
return this._time;
}
t.setDuration = function(d){
this._duration = (d == null || d <= 0) ? 100000 : d;
}
t.getDuration = function(){
return this._duration;
}
t.setPosition = function(p){
this.prevPos = this._pos;
var a = this.suffixe != '' ? this.suffixe : '';
this.obj[this.prop] = Math.round(p) + a;
this._pos = p;
this.broadcastMessage('onMotionChanged',{target:this,type:'onMotionChanged'});
}
t.getPosition = function(t){
if (t == undefined) t = this._time;
return this.func(t, this.begin, this.change, this._duration);
};
t.setFinish = function(f){
this.change = f - this.begin;
};
t.geFinish = function(){
return this.begin + this.change;
};
t.init = function(obj, prop, func, begin, finish, duration, suffixe){
if (!arguments.length) return;
this._listeners = new Array();
this.addListener(this);
if(suffixe) this.suffixe = suffixe;
this.obj = obj;
this.prop = prop;
this.begin = begin;
this._pos = begin;
this.setDuration(duration);
if (func!=null && func!='') {
this.func = func;
}
this.setFinish(finish);
}
t.start = function(){
this.rewind();
this.startEnterFrame();
this.broadcastMessage('onMotionStarted',{target:this,type:'onMotionStarted'});
//alert('in');
}
t.rewind = function(t){
this.stop();
this._time = (t == undefined) ? 0 : t;
this.fixTime();
this.update();
}
t.fforward = function(){
this._time = this._duration;
this.fixTime();
this.update();
}
t.update = function(){
this.setPosition(this.getPosition(this._time));
}
t.startEnterFrame = function(){
this.stopEnterFrame();
this.isPlaying = true;
this.onEnterFrame();
}
t.onEnterFrame = function(){
if(this.isPlaying) {
this.nextFrame();
setTimeout(Delegate.create(this, this.onEnterFrame), 0);
}
}
t.nextFrame = function(){
this.setTime((this.getTimer() - this._startTime) / 1000);
}
t.stop = function(){
this.stopEnterFrame();
this.broadcastMessage('onMotionStopped',{target:this,type:'onMotionStopped'});
}
t.stopEnterFrame = function(){
this.isPlaying = false;
}

t.continueTo = function(finish, duration){
this.begin = this._pos;
this.setFinish(finish);
if (this._duration != undefined)
this.setDuration(duration);
this.start();
}
t.resume = function(){
this.fixTime();
this.startEnterFrame();
this.broadcastMessage('onMotionResumed',{target:this,type:'onMotionResumed'});
}
t.yoyo = function (){
this.continueTo(this.begin,this._time);
}

t.addListener = function(o){
this.removeListener (o);
return this._listeners.push(o);
}
t.removeListener = function(o){
var a = this._listeners;	
var i = a.length;
while (i--) {
if (a[i] == o) {
a.splice (i, 1);
return true;
}
}
return false;
}
t.broadcastMessage = function(){
var arr = new Array();
for(var i = 0; i < arguments.length; i++){
arr.push(arguments[i])
}
var e = arr.shift();
var a = this._listeners;
var l = a.length;
for (var i=0; i<l; i++){
if(a[i][e])
a[i][e].apply(a[i], arr);
}
}
t.fixTime = function(){
this._startTime = this.getTimer() - this._time * 1000;
}
t.getTimer = function(){
return new Date().getTime() - this._time;
}
Tween.backEaseIn = function(t,b,c,d,a,p){
if (s == undefined) var s = 1.70158;
return c*(t/=d)*t*((s+1)*t - s) + b;
}
Tween.backEaseOut = function(t,b,c,d,a,p){
if (s == undefined) var s = 1.70158;
return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
}
Tween.backEaseInOut = function(t,b,c,d,a,p){
if (s == undefined) var s = 1.70158; 
if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
}
Tween.elasticEaseIn = function(t,b,c,d,a,p){
if (t==0) return b;  
if ((t/=d)==1) return b+c;  
if (!p) p=d*.3;
if (!a || a < Math.abs(c)) {
a=c; var s=p/4;
}
else 
var s = p/(2*Math.PI) * Math.asin (c/a);

return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;

}
Tween.elasticEaseOut = function (t,b,c,d,a,p){
if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
if (!a || a < Math.abs(c)) { a=c; var s=p/4; }
else var s = p/(2*Math.PI) * Math.asin (c/a);
return (a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b);
}
Tween.elasticEaseInOut = function (t,b,c,d,a,p){
if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) var p=d*(.3*1.5);
if (!a || a < Math.abs(c)) {var a=c; var s=p/4; }
else var s = p/(2*Math.PI) * Math.asin (c/a);
if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
}

Tween.bounceEaseOut = function(t,b,c,d){
if ((t/=d) < (1/2.75)) {
return c*(7.5625*t*t) + b;
} else if (t < (2/2.75)) {
return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
} else if (t < (2.5/2.75)) {
return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
} else {
return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
}
}
Tween.bounceEaseIn = function(t,b,c,d){
return c - Tween.bounceEaseOut (d-t, 0, c, d) + b;
}
Tween.bounceEaseInOut = function(t,b,c,d){
if (t < d/2) return Tween.bounceEaseIn (t*2, 0, c, d) * .5 + b;
else return Tween.bounceEaseOut (t*2-d, 0, c, d) * .5 + c*.5 + b;
}

Tween.strongEaseInOut = function(t,b,c,d){
return c*(t/=d)*t*t*t*t + b;
}

Tween.regularEaseIn = function(t,b,c,d){
return c*(t/=d)*t + b;
}
Tween.regularEaseOut = function(t,b,c,d){
return -c *(t/=d)*(t-2) + b;
}

Tween.regularEaseInOut = function(t,b,c,d){
if ((t/=d/2) < 1) return c/2*t*t + b;
return -c/2 * ((--t)*(t-2) - 1) + b;
}
Tween.strongEaseIn = function(t,b,c,d){
return c*(t/=d)*t*t*t*t + b;
}
Tween.strongEaseOut = function(t,b,c,d){
return c*((t=t/d-1)*t*t*t*t + 1) + b;
}

Tween.strongEaseInOut = function(t,b,c,d){
if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
return c/2*((t-=2)*t*t*t*t + 2) + b;
}