//MooTools More, <http://mootools.net/more>. Copyright (c) 2006-2008 Valerio Proietti, <http://mad4milk.net>, MIT Style License.

Fx.Scroll=new Class({Extends:Fx,options:{offset:{'x':0,'y':0},wheelStops:true},initialize:function(element,options){this.element=this.subject=$(element);this.parent(options);var cancel=this.cancel.bind(this,false);if($type(this.element)!='element')this.element=$(this.element.getDocument().body);var stopper=this.element;if(this.options.wheelStops){this.addEvent('start',function(){stopper.addEvent('mousewheel',cancel);},true);this.addEvent('complete',function(){stopper.removeEvent('mousewheel',cancel);},true);}},set:function(){var now=Array.flatten(arguments);this.element.scrollTo(now[0],now[1]);},compute:function(from,to,delta){var now=[];var x=2;x.times(function(i){now.push(Fx.compute(from[i],to[i],delta));});return now;},start:function(x,y){if(!this.check(arguments.callee,x,y))return this;var offsetSize=this.element.getSize(),scrollSize=this.element.getScrollSize();var scroll=this.element.getScroll(),values={x:x,y:y};for(var z in values){var max=scrollSize[z]-offsetSize[z];if($chk(values[z]))values[z]=($type(values[z])=='number')?values[z].limit(0,max):max;else values[z]=scroll[z];values[z]+=this.options.offset[z];}
return this.parent([scroll.x,scroll.y],[values.x,values.y]);},toTop:function(){return this.start(false,0);},toLeft:function(){return this.start(0,false);},toRight:function(){return this.start('right',false);},toBottom:function(){return this.start(false,'bottom');},toElement:function(el){var position=$(el).getPosition(this.element);return this.start(position.x,position.y);}});Hash.Cookie=new Class({Extends:Cookie,options:{autoSave:true},initialize:function(name,options){this.parent(name,options);this.load();},save:function(){var value=JSON.encode(this.hash);if(!value||value.length>4096)return false;if(value=='{}')this.dispose();else this.write(value);return true;},load:function(){this.hash=new Hash(JSON.decode(this.read(),true));return this;}});Hash.Cookie.implement((function(){var methods={};Hash.each(Hash.prototype,function(method,name){methods[name]=function(){var value=method.apply(this.hash,arguments);if(this.options.autoSave)this.save();return value;};});return methods;})());