/**
Script: Slideshow.Fold.js
	Slideshow.Fold - Flash extension for Slideshow.

License:
	MIT-style license.

Copyright:
	Copyright (c) 2008 [Aeron Glemann](http://www.electricprism.com/aeron/).
*/

Slideshow.Fold=new Class({Extends:Slideshow,initialize:function(B,C,A){this.parent(B,C,A)},_show:function(B){if(!this.image.retrieve("tween")){var C=(this.options.overlap)?{duration:this.options.duration}:{duration:this.options.duration/2};$$(this.a,this.b).set("tween",$merge(C,{link:"chain",onStart:this._start.bind(this),onComplete:this._complete.bind(this),property:"clip",transition:this.options.transition}))}var F=this._rect(this.image);var A=(this.counter%2)?this.a:this.b;if(B){A.get("tween").cancel().set("rect(0, 0, 0, 0)");this.image.get("tween").cancel().set("rect(auto, auto, auto, auto)")}else{if(this.options.overlap){A.get("tween").set("rect(auto, auto, auto, auto)");var D=this.image.get("tween").set(F.top+" "+F.left+" "+Math.ceil(F.bottom/2)+" "+F.left).start(F.top+" "+F.right+" "+Math.ceil(F.bottom/2)+" "+F.left).start(F.top+" "+F.right+" "+F.bottom+" "+F.left)}else{var E=function(G){this.image.get("tween").set(G.top+" "+G.left+" "+Math.ceil(G.bottom/2)+" "+G.left).start(G.top+" "+G.right+" "+Math.ceil(G.bottom/2)+" "+G.left).start(G.top+" "+G.right+" "+G.bottom+" "+G.left)}.pass(F,this);var F=this._rect(A);A.get("tween").set(F.top+" "+F.right+" "+F.bottom+" "+F.left).start(F.top+" "+F.right+" "+Math.ceil(F.bottom/2)+" "+F.left).start(F.top+" "+F.left+" "+Math.ceil(F.bottom/2)+" "+F.left).chain(E)}}},_rect:function(A){var B=A.getCoordinates(this.slideshow.retrieve("images"));B.right=(B.right>this.width)?this.width-B.left:B.width;B.bottom=(B.bottom>this.height)?this.height-B.top:B.height;B.top=(B.top<0)?Math.abs(B.top):0;B.left=(B.left<0)?Math.abs(B.left):0;return B}});