Filter = Class.create({
	initialize: function (container, options){
		this.container = $(container);
		this.options = Object.extend({
			afterFilter: Prototype.emptyFunction
		}, options || {});
	},
	attachHandlers: function(aElements){
		aElements.invoke('observe', 'click', function(evt){
			var eltURI = evt.element().href;
			
			if(eltURI.include('/shop/asp/')) {
				eltURI +='/ajax/yes';
			}
			else {
				eltURI = eltURI + "&ajax=yes";
			}

			this.doFilter(eltURI);
			Event.stop(evt);
			return false;
		}.bindAsEventListener(this));
	},
	attachFormHandler: function(formId){
		this.formElement = $(formId);
		if(this.formElement) {
			var hidden = $(Builder.node('input', { type: 'hidden', name: 'ajax', value: 'yes' }));
			this.formElement.appendChild(hidden);
			
			this.formElement.getInputs('submit').invoke('remove')
			if($('sort') != null){
				$('sort').observe('change', function() {
					this.doFormFilter(this.formElement.action);
				}.bind(this))
			}	
		}	
	},
	attachShowTenureLinksHandlers: function(aElements){
		aElements.invoke('observe', 'click', function(evt){
			var link = evt.element();
			var link2 = link.next('.plan_tenure_link');
			var parent = link.getOffsetParent(link);
			var plans = parent.getElementsBySelector('.plansItem');
			
			plans.each(function(div, index){
				if(index>0) {
					div.removeClassName("displayNone");
				}
			});
			
			link.addClassName("displayNone");
			link2.removeClassName("displayNone");
		}.bindAsEventListener(this));
	},
	attachHideTenureLinksHandlers: function(aElements){
		aElements.invoke('observe', 'click', function(evt){
			var link = evt.element();
			var link2 = link.previous('.plan_tenure_link');
			var parent = link.getOffsetParent(link);
			var plans = parent.getElementsBySelector('.plansItem');
	
			plans.each(function(div, index){
				if(index>0) {
					div.addClassName("displayNone");
				}
			});
	
			link.addClassName("displayNone");
			link2.removeClassName("displayNone");
		}.bindAsEventListener(this));
	},
	doFilter: function(url){
		new Ajax.Updater(this.container, url, {
			evalScripts: true,
			onLoading: function () {
				$('sandglass').show();
			}.bind(this),
			method: 'get',
			onComplete: function(){
				this.container.hide();
				Effect.Appear(this.container, {duration: 1.0});
				this.notify('afterFilter');
				$('sandglass').hide();
			}.bindAsEventListener(this)
		});

	},
	doFormFilter: function(url){
		new Ajax.Updater(this.container, url, {
			evalScripts: true,
			onLoading: function () {
				$('sandglass').show();
			}.bind(this),
			method: 'get',
			parameters: this.formElement.serialize(true),
			onComplete: function(){
				this.container.hide();
				Effect.Appear(this.container, {duration: 1.0});
				this.notify('afterFilter');
				$('sandglass').hide();
			}.bindAsEventListener(this)
		});

	},
	notify: function(event_name){
		try{
			if(this.options[event_name])
				return [this.options[event_name].apply(this.options[event_name],$A(arguments).slice(1))];
		}catch(e){
			if(e != $break)
				throw e;
			else
				return false;
		}
	}
});