//MooTools, <http://mootools.net>, My Object Oriented (JavaScript) Tools. Copyright (c) 2006-2009 Valerio Proietti, <http://mad4milk.net>, MIT Style License.

var Fx=new Class({Implements:[Chain,Events,Options],options:{fps:50,unit:false,duration:500,link:"ignore"},initialize:function(a){this.subject=this.subject||this;
this.setOptions(a);this.options.duration=Fx.Durations[this.options.duration]||this.options.duration.toInt();var b=this.options.wait;if(b===false){this.options.link="cancel";
}},getTransition:function(){return function(a){return -(Math.cos(Math.PI*a)-1)/2;};},step:function(){var a=$time();if(a<this.time+this.options.duration){var b=this.transition((a-this.time)/this.options.duration);
this.set(this.compute(this.from,this.to,b));}else{this.set(this.compute(this.from,this.to,1));this.complete();}},set:function(a){return a;},compute:function(c,b,a){return Fx.compute(c,b,a);
},check:function(){if(!this.timer){return true;}switch(this.options.link){case"cancel":this.cancel();return true;case"chain":this.chain(this.caller.bind(this,arguments));
return false;}return false;},start:function(b,a){if(!this.check(b,a)){return this;}this.from=b;this.to=a;this.time=0;this.transition=this.getTransition();
this.startTimer();this.onStart();return this;},complete:function(){if(this.stopTimer()){this.onComplete();}return this;},cancel:function(){if(this.stopTimer()){this.onCancel();
}return this;},onStart:function(){this.fireEvent("start",this.subject);},onComplete:function(){this.fireEvent("complete",this.subject);if(!this.callChain()){this.fireEvent("chainComplete",this.subject);
}},onCancel:function(){this.fireEvent("cancel",this.subject).clearChain();},pause:function(){this.stopTimer();return this;},resume:function(){this.startTimer();
return this;},stopTimer:function(){if(!this.timer){return false;}this.time=$time()-this.time;this.timer=$clear(this.timer);return true;},startTimer:function(){if(this.timer){return false;
}this.time=$time()-this.time;this.timer=this.step.periodical(Math.round(1000/this.options.fps),this);return true;}});Fx.compute=function(c,b,a){return(b-c)*a+c;
};Fx.Durations={"short":250,normal:500,"long":1000};Fx.CSS=new Class({Extends:Fx,prepare:function(d,e,b){b=$splat(b);var c=b[1];if(!$chk(c)){b[1]=b[0];
b[0]=d.getStyle(e);}var a=b.map(this.parse);return{from:a[0],to:a[1]};},parse:function(a){a=$lambda(a)();a=(typeof a=="string")?a.split(" "):$splat(a);
return a.map(function(c){c=String(c);var b=false;Fx.CSS.Parsers.each(function(f,e){if(b){return;}var d=f.parse(c);if($chk(d)){b={value:d,parser:f};}});
b=b||{value:c,parser:Fx.CSS.Parsers.String};return b;});},compute:function(d,c,b){var a=[];(Math.min(d.length,c.length)).times(function(e){a.push({value:d[e].parser.compute(d[e].value,c[e].value,b),parser:d[e].parser});
});a.$family={name:"fx:css:value"};return a;},serve:function(c,b){if($type(c)!="fx:css:value"){c=this.parse(c);}var a=[];c.each(function(d){a=a.concat(d.parser.serve(d.value,b));
});return a;},render:function(a,d,c,b){a.setStyle(d,this.serve(c,b));},search:function(a){if(Fx.CSS.Cache[a]){return Fx.CSS.Cache[a];}var b={};Array.each(document.styleSheets,function(e,d){var c=e.href;
if(c&&c.contains("://")&&!c.contains(document.domain)){return;}var f=e.rules||e.cssRules;Array.each(f,function(j,g){if(!j.style){return;}var h=(j.selectorText)?j.selectorText.replace(/^\w+/,function(i){return i.toLowerCase();
}):null;if(!h||!h.test("^"+a+"$")){return;}Element.Styles.each(function(k,i){if(!j.style[i]||Element.ShortStyles[i]){return;}k=String(j.style[i]);b[i]=(k.test(/^rgb/))?k.rgbToHex():k;
});});});return Fx.CSS.Cache[a]=b;}});Fx.CSS.Cache={};Fx.CSS.Parsers=new Hash({Color:{parse:function(a){if(a.match(/^#[0-9a-f]{3,6}$/i)){return a.hexToRgb(true);
}return((a=a.match(/(\d+),\s*(\d+),\s*(\d+)/)))?[a[1],a[2],a[3]]:false;},compute:function(c,b,a){return c.map(function(e,d){return Math.round(Fx.compute(c[d],b[d],a));
});},serve:function(a){return a.map(Number);}},Number:{parse:parseFloat,compute:Fx.compute,serve:function(b,a){return(a)?b+a:b;}},String:{parse:$lambda(false),compute:$arguments(1),serve:$arguments(0)}});
Fx.Tween=new Class({Extends:Fx.CSS,initialize:function(b,a){this.element=this.subject=document.id(b);this.parent(a);},set:function(b,a){if(arguments.length==1){a=b;
b=this.property||this.options.property;}this.render(this.element,b,a,this.options.unit);return this;},start:function(c,e,d){if(!this.check(c,e,d)){return this;
}var b=Array.flatten(arguments);this.property=this.options.property||b.shift();var a=this.prepare(this.element,this.property,b);return this.parent(a.from,a.to);
}});Element.Properties.tween={set:function(a){var b=this.retrieve("tween");if(b){b.cancel();}return this.eliminate("tween").store("tween:options",$extend({link:"cancel"},a));
},get:function(a){if(a||!this.retrieve("tween")){if(a||!this.retrieve("tween:options")){this.set("tween",a);}this.store("tween",new Fx.Tween(this,this.retrieve("tween:options")));
}return this.retrieve("tween");}};Element.implement({tween:function(a,c,b){this.get("tween").start(arguments);return this;},fade:function(c){var e=this.get("tween"),d="opacity",a;
c=$pick(c,"toggle");switch(c){case"in":e.start(d,1);break;case"out":e.start(d,0);break;case"show":e.set(d,1);break;case"hide":e.set(d,0);break;case"toggle":var b=this.retrieve("fade:flag",this.get("opacity")==1);
e.start(d,(b)?0:1);this.store("fade:flag",!b);a=true;break;default:e.start(d,arguments);}if(!a){this.eliminate("fade:flag");}return this;},highlight:function(c,a){if(!a){a=this.retrieve("highlight:original",this.getStyle("background-color"));
a=(a=="transparent")?"#fff":a;}var b=this.get("tween");b.start("background-color",c||"#ffff88",a).chain(function(){this.setStyle("background-color",this.retrieve("highlight:original"));
b.callChain();}.bind(this));return this;}});Fx.Morph=new Class({Extends:Fx.CSS,initialize:function(b,a){this.element=this.subject=document.id(b);this.parent(a);
},set:function(a){if(typeof a=="string"){a=this.search(a);}for(var b in a){this.render(this.element,b,a[b],this.options.unit);}return this;},compute:function(e,d,c){var a={};
for(var b in e){a[b]=this.parent(e[b],d[b],c);}return a;},start:function(b){if(!this.check(b)){return this;}if(typeof b=="string"){b=this.search(b);}var e={},d={};
for(var c in b){var a=this.prepare(this.element,c,b[c]);e[c]=a.from;d[c]=a.to;}return this.parent(e,d);}});Element.Properties.morph={set:function(a){var b=this.retrieve("morph");
if(b){b.cancel();}return this.eliminate("morph").store("morph:options",$extend({link:"cancel"},a));},get:function(a){if(a||!this.retrieve("morph")){if(a||!this.retrieve("morph:options")){this.set("morph",a);
}this.store("morph",new Fx.Morph(this,this.retrieve("morph:options")));}return this.retrieve("morph");}};Element.implement({morph:function(a){this.get("morph").start(a);
return this;}});Fx.implement({getTransition:function(){var a=this.options.transition||Fx.Transitions.Sine.easeInOut;if(typeof a=="string"){var b=a.split(":");
a=Fx.Transitions;a=a[b[0]]||a[b[0].capitalize()];if(b[1]){a=a["ease"+b[1].capitalize()+(b[2]?b[2].capitalize():"")];}}return a;}});Fx.Transition=function(b,a){a=$splat(a);
return $extend(b,{easeIn:function(c){return b(c,a);},easeOut:function(c){return 1-b(1-c,a);},easeInOut:function(c){return(c<=0.5)?b(2*c,a)/2:(2-b(2*(1-c),a))/2;
}});};Fx.Transitions=new Hash({linear:$arguments(0)});Fx.Transitions.extend=function(a){for(var b in a){Fx.Transitions[b]=new Fx.Transition(a[b]);}};Fx.Transitions.extend({Pow:function(b,a){return Math.pow(b,a[0]||6);
},Expo:function(a){return Math.pow(2,8*(a-1));},Circ:function(a){return 1-Math.sin(Math.acos(a));},Sine:function(a){return 1-Math.sin((1-a)*Math.PI/2);
},Back:function(b,a){a=a[0]||1.618;return Math.pow(b,2)*((a+1)*b-a);},Bounce:function(f){var e;for(var d=0,c=1;1;d+=c,c/=2){if(f>=(7-4*d)/11){e=c*c-Math.pow((11-6*d-11*f)/4,2);
break;}}return e;},Elastic:function(b,a){return Math.pow(2,10*--b)*Math.cos(20*b*Math.PI*(a[0]||1)/3);}});["Quad","Cubic","Quart","Quint"].each(function(b,a){Fx.Transitions[b]=new Fx.Transition(function(c){return Math.pow(c,[a+2]);
});});