var siteCalendar = Class.create();
	siteCalendar.prototype =
	{
		initialize: function(container_id)
		{
			this.container = $(container_id);
			if(!this.container)
			{
				return false;
			}

			this.first_load = true;
			this.years = null;
			this.months = null;
			this.year_dropper = null;
			this.month_dropper = null;
			this.delay = 50;
			this.timeout = null;
			this.current_list_id = null;
			this.current_dropper_id = null;
			this.waiting_response = false;
			this.wait = '<img src="images/other/wait.gif" height="7" width="40" alt="Loading..." title="Loading, please wait...">';

			this.buffer_keys = new Array();
			this.buffer_content = new Array();
			this.buffer_index = -1;

			this.year = new Date().getFullYear();
			this.month = new Date().getMonth() + 1;

			return true;


		},

		init: function()
		{
			this.timestamp = new Date();
			this.timestamp = Date.parse( this.timestamp ) + this.timestamp.getMilliseconds();
			this.timestamp += Math.round( Math.random() * this.timestamp );

			this.year_handlers = this.container.getElementsByClassName('year_list');
			this.month_handlers = this.container.getElementsByClassName('month_list');

			if( this.year_handlers.length )
			{
				this.year_handlers[0].id = 'drop_year_'+this.timestamp;
				this.year_handlers[1].id = 'list_year_'+this.timestamp;
				this.year_handlers[1].addClassName('list');

				this.year_dropper =  this.year_handlers[0];

				this.observeDropper(this.year_dropper);
				this.observeList( this.year_handlers[1] );
			}

			if( this.month_handlers.length )
			{
				this.month_handlers[0].id = 'drop_month_'+this.timestamp;
				this.month_handlers[1].id = 'list_month_'+this.timestamp;
				this.month_handlers[1].addClassName('list');

				this.month_dropper = this.month_handlers[0];

				this.observeDropper(this.month_dropper);
				this.observeList( this.month_handlers[1] );
			}

			if( this.first_load )
			{
				this.first_load = false;
			}
			return true;
		},

		observeDropper: function( dropper )
		{
			Event.observe
			(
				dropper,
				'click',
				this.showList.bind(this, dropper )
			);

			Event.observe
			(
				dropper,
				'mouseover',
				this.stopHiding.bind(this)
			);

			Event.observe
			(
				dropper,
				'mouseout',
				this.slowHide.bind(this)
			);
			return true;
		},

		observeList: function( list_obj )
		{
			Element.addClassName(list_obj,'hidden_list');

			this.links = list_obj.getElementsByTagName('a');
			for( var i=0; i< this.links.length; i++)
			{
				this.links[i].onclick = function(){return false;}
				Event.observe
				(
					this.links[i],
					'click',
					this.catchLink.bind(this, this.links[i] )
				);
			}

			Event.observe
			(
				list_obj,
				'mouseover',
				this.stopHiding.bind(this)
			);

			Event.observe
			(
				list_obj,
				'mouseout',
				this.slowHide.bind(this)
			);
			return true;
		},

		catchLink: function( link )
		{
			this.load(link.href);
			return false;
		},

		load: function( url )
		{
			this.waiting_response = true;

			this.last_url = url;
			this.buffer_index = this.buffer_keys.indexOf(this.last_url.split('date_')[1]);
			if( this.buffer_index != -1 )
			{
				this.reload(this.buffer_content[this.buffer_index]);
				this.buffer_index = -1;
				return true;
			}

			this.data = this.last_url.split('_');
			this.id = this.data[1];
			this.year = this.data[2];
			this.month = this.data[3];
			this.day = null;

			if( this.first_load )
			{
				this.day = this.data[4];
				if( !this.container.hasClassName('calendar') ) {this.container.addClassName('calendar');}
			}
			else
			{
				this.quickHide();
				if( this.wait.length )
				{
					Element.update(this.current_dropper_id,this.wait);
				}
			}

			this.calendar_request = new Ajax.Request(
									'calendar',
									{
										method: "post",
										parameters: {id: this.id, year: this.year, month: this.month, day: this.day},
										onComplete: this.saveToBuffer.bind(this)
									}
								);
			return true;
		},

		saveToBuffer: function( request )
		{
			this.buffer_keys.push(this.last_url.split('date_')[1]);
			this.buffer_content.push(request.responseText);
			this.reload(request.responseText);
			return true;
		},

		reload: function( content )
		{
			Element.update(this.container, content);
			this.waiting_response = false;
			this.init();
			return true;
		},

		showList: function( dropper_obj )
		{
			if( !this.waiting_response )
			{
				this.current_dropper_id = dropper_obj.id;
				Element.addClassName(this.current_dropper_id,'dropped');
				this.current_list_id = this.current_dropper_id.replace('drop','list')
				Element.removeClassName(this.current_list_id,'hidden_list');
			}
			return true;
		},

		stopHiding: function()
		{
			if( this.timeout )
			{
				clearTimeout(this.timeout);
			}
			return true;
		},

		slowHide: function()
		{
			this.timeout = setTimeout( this.quickHide.bind(this), this.delay );
			return true;
		},

		quickHide: function()
		{
			Element.addClassName(this.current_list_id,'hidden_list');
			Element.removeClassName(this.current_dropper_id,'dropped');
			return true;
		},

		changeMonth: function( destination )
		{
			if( destination == 'up' )
			{
				this.month++;
				if( this.month == 13 )
				{
					this.month = 1;
					this.year ++;
				}
			}
			if( destination == 'down' )
			{
				this.month--;
				if( this.month == 0 )
				{
					this.month = 12;
					this.year--;
				}
			}

			this.calendar_request = new Ajax.Request(
						'calendar',
						{
							method: "post",
							parameters: {year: this.year, month: this.month},
							onComplete: this.reloadCalendar.bind(this)
						}
					);
		},

		reloadCalendar: function(request)
		{
			if( request.responseText )
			{
				this.reload(request.responseText);
			}
		}
	}