/*
Copyright (c) 2006, Yahoo! Inc. All rights reserved.
Code licensed under the BSD License:
http://developer.yahoo.net/yui/license.txt
version: 0.10.0
*/
YAHOO.util.Anim=function(el,attributes,duration,method){if(el){this.init(el,attributes,duration,method);

}};

YAHOO.util.Anim.prototype={doMethod:function(attribute,start,end){return this.method(this.currentFrame,start,end-start,this.totalFrames);

},setAttribute:function(attribute,val,unit){YAHOO.util.Dom.setStyle(this.getEl(),attribute,val+unit);

},getAttribute:function(attribute){return parseFloat(YAHOO.util.Dom.getStyle(this.getEl(),attribute));

},defaultUnit:'px',defaultUnits:{opacity:' '},init:function(el,attributes,duration,method){var isAnimated=false;

var startTime=null;

var endTime=null;

var actualFrames=0;

var defaultValues={};

el=YAHOO.util.Dom.get(el);

this.attributes=attributes||{};

this.duration=duration||1;

this.method=method||YAHOO.util.Easing.easeNone;

this.useSeconds=true;

this.currentFrame=0;

this.totalFrames=YAHOO.util.AnimMgr.fps;

this.getEl=function(){return el;

};

this.setDefault=function(attribute,val){if(val.constructor!=Array&&(val=='auto'||isNaN(val))){switch(attribute){case'width':val=el.clientWidth||el.offsetWidth;

break;

case'height':val=el.clientHeight||el.offsetHeight;

break;

case'left':if(YAHOO.util.Dom.getStyle(el,'position')=='absolute'){val=el.offsetLeft;

}else{val=0;

}break;

case'top':if(YAHOO.util.Dom.getStyle(el,'position')=='absolute'){val=el.offsetTop;

}else{val=0;

}break;

default:val=0;

}}defaultValues[attribute]=val;

};

this.getDefault=function(attribute){return defaultValues[attribute];

};

this.isAnimated=function(){return isAnimated;

};

this.getStartTime=function(){return startTime;

};

this.animate=function(){if(this.isAnimated()){return false;

}this.onStart.fire();

this._onStart.fire();

this.totalFrames=(this.useSeconds)?Math.ceil(YAHOO.util.AnimMgr.fps*this.duration):this.duration;

YAHOO.util.AnimMgr.registerElement(this);

var attributes=this.attributes;

var el=this.getEl();

var val;

for(var attribute in attributes){val=this.getAttribute(attribute);

this.setDefault(attribute,val);

}isAnimated=true;

actualFrames=0;

startTime=new Date();

};

this.stop=function(){if(!this.isAnimated()){return false;

}this.currentFrame=0;

endTime=new Date();

var data={time:endTime,duration:endTime-startTime,frames:actualFrames,fps:actualFrames/this.duration};

isAnimated=false;

actualFrames=0;

this.onComplete.fire(data);

};

var onTween=function(){var start;

var end=null;

var val;

var unit;

var attributes=this['attributes'];

for(var attribute in attributes){unit=attributes[attribute]['unit']||this.defaultUnits[attribute]||this.defaultUnit;

if(typeof attributes[attribute]['from']!='undefined'){start=attributes[attribute]['from'];

}else{start=this.getDefault(attribute);

}if(typeof attributes[attribute]['to']!='undefined'){end=attributes[attribute]['to'];

}else if(typeof attributes[attribute]['by']!='undefined'){if(start.constructor==Array){end=[];

for(var i=0,len=start.length;

i<len;

++i){end[i]=start[i]+attributes[attribute]['by'][i];

}}else{end=start+attributes[attribute]['by'];

}}if(end!==null&&typeof end!='undefined'){val=this.doMethod(attribute,start,end);

if((attribute=='width'||attribute=='height'||attribute=='opacity')&&val<0){val=0;

}this.setAttribute(attribute,val,unit);

}}actualFrames+=1;

};

this._onStart=new YAHOO.util.CustomEvent('_onStart',this);

this.onStart=new YAHOO.util.CustomEvent('start',this);

this.onTween=new YAHOO.util.CustomEvent('tween',this);

this._onTween=new YAHOO.util.CustomEvent('_tween',this);

this.onComplete=new YAHOO.util.CustomEvent('complete',this);

this._onTween.subscribe(onTween);

}};

YAHOO.util.AnimMgr=new function(){var thread=null;

var queue=[];

var tweenCount=0;

this.fps=200;

this.delay=1;

this.registerElement=function(tween){if(tween.isAnimated()){return false;

}queue[queue.length]=tween;

tweenCount+=1;

this.start();

};

this.start=function(){if(thread===null){thread=setInterval(this.run,this.delay);

}};

this.stop=function(tween){if(!tween){clearInterval(thread);

for(var i=0,len=queue.length;

i<len;

++i){if(queue[i].isAnimated()){queue[i].stop();

}}queue=[];

thread=null;

tweenCount=0;

}else{tween.stop();

tweenCount-=1;

if(tweenCount<=0){this.stop();

}}};

this.run=function(){for(var i=0,len=queue.length;

i<len;

++i){var tween=queue[i];

if(!tween||!tween.isAnimated()){continue;

}if(tween.currentFrame<tween.totalFrames||tween.totalFrames===null){tween.currentFrame+=1;

if(tween.useSeconds){correctFrame(tween);

}tween.onTween.fire();

tween._onTween.fire();

}else{YAHOO.util.AnimMgr.stop(tween);

}}};

var correctFrame=function(tween){var frames=tween.totalFrames;

var frame=tween.currentFrame;

var expected=(tween.currentFrame*tween.duration*1000/tween.totalFrames);// + 10000;

var elapsed=(new Date()-tween.getStartTime()) - 10000;

var tweak=0;

if(elapsed<tween.duration*1000){tweak=Math.round((elapsed/expected-1)*tween.currentFrame);

}else{tweak=frames-(frame+1);

}if(tweak>0&&isFinite(tweak)){if(tween.currentFrame+tweak>=frames){tweak=frames-(frame+1);

}tween.currentFrame+=tweak;

}};

};

YAHOO.util.Bezier=new function(){this.getPosition=function(points,t){var n=points.length;

var tmp=[];

for(var i=0;

i<n;

++i){tmp[i]=[points[i][0],points[i][1]];

}for(var j=1;

j<n;

++j){for(i=0;

i<n-j;

++i){tmp[i][0]=(1-t)*tmp[i][0]+t*tmp[parseInt(i+1,10)][0];

tmp[i][1]=(1-t)*tmp[i][1]+t*tmp[parseInt(i+1,10)][1];

}}return[tmp[0][0],tmp[0][1]];

};

};

YAHOO.util.Easing=new function(){this.easeNone=function(t,b,c,d){return b+c*(t/=d);

};

this.easeIn=function(t,b,c,d){return b+c*((t/=d)*t*t);

};

this.easeOut=function(t,b,c,d){var ts=(t/=d)*t;

var tc=ts*t;

return b+c*(tc+-3*ts+3*t);

};

this.easeBoth=function(t,b,c,d){var ts=(t/=d)*t;

var tc=ts*t;

return b+c*(-2*tc+3*ts);

};

this.backIn=function(t,b,c,d){var ts=(t/=d)*t;

var tc=ts*t;

return b+c*(-3.4005*tc*ts+10.2*ts*ts+-6.2*tc+0.4*ts);

};

this.backOut=function(t,b,c,d){var ts=(t/=d)*t;

var tc=ts*t;

return b+c*(8.292*tc*ts+-21.88*ts*ts+22.08*tc+-12.69*ts+5.1975*t);

};

this.backBoth=function(t,b,c,d){var ts=(t/=d)*t;

var tc=ts*t;

return b+c*(0.402*tc*ts+-2.1525*ts*ts+-3.2*tc+8*ts+-2.05*t);

};

};

YAHOO.util.Motion=function(el,attributes,duration,method){if(el){this.initMotion(el,attributes,duration,method);

}};

YAHOO.util.Motion.prototype=new YAHOO.util.Anim();

YAHOO.util.Motion.prototype.defaultUnits.points='px';

YAHOO.util.Motion.prototype.doMethod=function(attribute,start,end){var val=null;

if(attribute=='points'){var translatedPoints=this.getTranslatedPoints();

var t=this.method(this.currentFrame,0,100,this.totalFrames)/100;

if(translatedPoints){val=YAHOO.util.Bezier.getPosition(translatedPoints,t);

}}else{val=this.method(this.currentFrame,start,end-start,this.totalFrames);

}return val;

};

YAHOO.util.Motion.prototype.getAttribute=function(attribute){var val=null;

if(attribute=='points'){val=[this.getAttribute('left'),this.getAttribute('top')];

if(isNaN(val[0])){val[0]=0;

}if(isNaN(val[1])){val[1]=0;

}}else{val=parseFloat(YAHOO.util.Dom.getStyle(this.getEl(),attribute));

}return val;

};

YAHOO.util.Motion.prototype.setAttribute=function(attribute,val,unit){if(attribute=='points'){YAHOO.util.Dom.setStyle(this.getEl(),'left',val[0]+unit);

YAHOO.util.Dom.setStyle(this.getEl(),'top',val[1]+unit);

}else{YAHOO.util.Dom.setStyle(this.getEl(),attribute,val+unit);

}};

YAHOO.util.Motion.prototype.initMotion=function(el,attributes,duration,method){YAHOO.util.Anim.call(this,el,attributes,duration,method);

attributes=attributes||{};

attributes.points=attributes.points||{};

attributes.points.control=attributes.points.control||[];

this.attributes=attributes;

var start;

var end=null;

var translatedPoints=null;

this.getTranslatedPoints=function(){return translatedPoints;

};

var translateValues=function(val,self){var pageXY=YAHOO.util.Dom.getXY(self.getEl());

val=[val[0]-pageXY[0]+start[0],val[1]-pageXY[1]+start[1]];

return val;

};

var onStart=function(){start=this.getAttribute('points');

var attributes=this.attributes;

var control=attributes['points']['control']||[];

if(control.length>0&&control[0].constructor!=Array){control=[control];

}if(YAHOO.util.Dom.getStyle(this.getEl(),'position')=='static'){YAHOO.util.Dom.setStyle(this.getEl(),'position','relative');

}if(typeof attributes['points']['from']!='undefined'){YAHOO.util.Dom.setXY(this.getEl(),attributes['points']['from']);

start=this.getAttribute('points');

}else if((start[0]===0||start[1]===0)){YAHOO.util.Dom.setXY(this.getEl(),YAHOO.util.Dom.getXY(this.getEl()));

start=this.getAttribute('points');

}var i,len;

if(typeof attributes['points']['to']!='undefined'){end=translateValues(attributes['points']['to'],this);

for(i=0,len=control.length;

i<len;

++i){control[i]=translateValues(control[i],this);

}}else if(typeof attributes['points']['by']!='undefined'){end=[start[0]+attributes['points']['by'][0],start[1]+attributes['points']['by'][1]];

for(i=0,len=control.length;

i<len;

++i){control[i]=[start[0]+control[i][0],start[1]+control[i][1]];

}}if(end){translatedPoints=[start];

if(control.length>0){translatedPoints=translatedPoints.concat(control);

}translatedPoints[translatedPoints.length]=end;

}};

this._onStart.subscribe(onStart);

};

YAHOO.util.Scroll=function(el,attributes,duration,method){if(el){YAHOO.util.Anim.call(this,el,attributes,duration,method);

}};

YAHOO.util.Scroll.prototype=new YAHOO.util.Anim();

YAHOO.util.Scroll.prototype.defaultUnits.scroll=' ';

YAHOO.util.Scroll.prototype.doMethod=function(attribute,start,end){var val=null;

if(attribute=='scroll'){val=[this.method(this.currentFrame,start[0],end[0]-start[0],this.totalFrames),this.method(this.currentFrame,start[1],end[1]-start[1],this.totalFrames)];

}else{val=this.method(this.currentFrame,start,end-start,this.totalFrames);

}return val;

};

YAHOO.util.Scroll.prototype.getAttribute=function(attribute){var val=null;

var el=this.getEl();

if(attribute=='scroll'){val=[el.scrollLeft,el.scrollTop];

}else{val=parseFloat(YAHOO.util.Dom.getStyle(el,attribute));

}return val;

};

YAHOO.util.Scroll.prototype.setAttribute=function(attribute,val,unit){var el=this.getEl();

if(attribute=='scroll'){el.scrollLeft=val[0];

el.scrollTop=val[1];

}else{YAHOO.util.Dom.setStyle(el,attribute,val+unit);

}};