var cart = Class.create();
	cart.prototype =
	{
		initialize: function(
							price_container_class,
							to_cart_buttons_class,
							inbasket_class,

							toggler,
							toggler_container,
							cart_button,
							cart_content,
							total_sum,
							total_amount,
							products_count_in_cart,
							cut_down,
							order_form,
							user_full_name,
							user_feedback_info,
							status,
							close_order_form,
							hide_class )
		{
			this.msg_delete_product = 'Are you really want to delete product?';

			this.table = null;

			this.msg_empty		= 'Empty field: ';
			this.msg_sent		= 'Message successfully sent.';
			this.msg_not_sent	= 'Failed to send message.';
			this.input			= '';
			this.textarea		= '';

			this.change_amount_in_process = false;
			this.add_to_cart_in_process = false;
			this.open_cart_in_process = false;
			this.cart_loaded = false;

			this.hide_class = hide_class;

			this.cart = {};
			this.cart.ids = new Array();
			this.cart.data = new Array();

			this.first_amount = 0;

			// ФОРМА ЗАКАЗА
			this.status = $( status );
			this.order_form = $( order_form );
			this.user_full_name = $( user_full_name );
			this.user_feedback_info = $( user_feedback_info );
			this.close_order_form = $( close_order_form );
			this.close_order_form.onclick = function(){ return false; };

			this.order_form.onsubmit = function(){ return false; };
			Event.observe( this.order_form, 'submit', this.sendOrderRequest.bind( this ) );
			Event.observe( this.user_full_name, 'focus', this.showMessage.bind( this, '' ) );
			Event.observe( this.user_feedback_info, 'focus', this.showMessage.bind( this, '' ) );
			Event.observe( this.close_order_form, 'click', this.closeOrderForm.bind( this ) );
			// ФОРМА ЗАКАЗА

			this.toggler = $( toggler );
			this.toggler.onclick = function(){ return false; };
			this.text_basket_empty = 'Корзина пуста';
			this.text_selected = 'Выбрано ';
			this.text_products = ' товар(ов)';
			this.products_count_in_cart = parseInt( products_count_in_cart );

			this.toggler.innerHTML = ( this.products_count_in_cart ) ? this.text_selected + this.products_count_in_cart + this.text_products : this.text_basket_empty ;

			this.cart_button = $( cart_button );
			if( !this.products_count_in_cart )
			{
				Element.addClassName( this.cart_button, this.hide_class );
			}
			Event.observe( this.cart_button, 'click', this.orderForm.bind( this ) );

			this.cut_down = $( cut_down );
			this.cut_down.onclick = function(){ return false; };
			this.toggler_container = $( toggler_container );
			this.cart_content = $( cart_content );
			this.total_sum = $( total_sum );
			this.total_amount = $( total_amount );

			this.total_sum.innerHTML = '0';
			this.total_amount.innerHTML = '0';

			Element.addClassName( this.toggler_container, this.hide_class );

			this.price_container_class = price_container_class;
			this.to_cart_buttons_class = to_cart_buttons_class;
			this.inbasket_class = inbasket_class;

			this.to_cart_buttons = $A( document.getElementsByClassName( to_cart_buttons_class ) );
			for( i=0; i<this.to_cart_buttons.length; i++ )
			{
				this.init( this.to_cart_buttons[i] );
			}
			Event.observe( this.toggler, 'click', this.toggleCart.bind( this ) )
			Event.observe( this.cut_down, 'click', this.toggleCart.bind( this ) )

			this.cart_template = '';
			this.cart_template +=	'<tr id="row_#{product_id}">';
			this.cart_template +=		'<td valign="top">';
			this.cart_template +=			'<div style="padding-bottom: 3px;"><a href="catalogue?item=#{rubric_id}">#{rubric_name}</a> / <a href="catalogue?item=#{product_id}">#{product_name}</a></div>';
			this.cart_template +=			'Цена: <span id="price_#{product_id}">#{price}</span>';
			this.cart_template +=		'</td><td align="center" valign="center" class="amount">';
			this.cart_template +=			'<span class="up" id="up_#{product_id}">&#8593;</span>';
			this.cart_template +=			'<input id="input_#{product_id}" type="text" class="amount_value" value="#{amount}"/>';
			this.cart_template +=			'<span class="down" id="down_#{product_id}">&#8595;</span>';
			this.cart_template +=		'</td><td align="center" class="total_price">';
			this.cart_template +=			'<span id="total_price_#{product_id}">#{totalprice}</span>';

			this.cart_template +=		'</td><td class="delete_products">';
			this.cart_template +=			'<span id="delete_#{product_id}" class="delete_buttons"><img src="images/admin/delete.gif" border="0"/></span>';
			this.cart_template +=		'</td>';

			this.cart_template +=	'</tr>';

			this.cart_template = new Template(this.cart_template);

			return true;
		},

		orderForm: function()
		{
			if( !this.products_count_in_cart ) return false;

			if( Element.hasClassName( this.toggler_container, this.hide_class ) )
				Element.addClassName( this.order_form, this.hide_class );
			else
				Element.removeClassName( this.order_form, this.hide_class );
		},

		sendOrderRequest: function()
		{
			this.user_full_name.value = this.user_full_name.value.strip();
			if( this.user_full_name.value == '' )
			{
				this.showMessage( this.msg_empty + this.input );
				return false;
			}

			this.user_feedback_info.value = this.user_feedback_info.value.strip();
			if( this.user_feedback_info.value == '' )
			{
				this.showMessage( this.msg_empty + this.textarea );
				return false;
			}

			this.order_form.disable();

			this.request = new Ajax.Request
				(
					this.order_form.action,
					{
						method: 'post',
						parameters:
						{
							user_full_name: this.user_full_name.value,
							user_feedback_info: this.user_feedback_info.value,
							is_ajax: 1
						},
						onComplete: this.endOrderRequest.bind( this )
					}
				);
			return false;
		},

		endOrderRequest: function( request )
		{
			this.order_form.enable();
			if( request.responseText == 'NOT_SENT' )
			{
				this.showMessage( this.msg_not_sent );
			}
			else
			{
				this.showMessage( this.msg_sent );
				this.order_form.reset();
				Element.addClassName( this.toggler_container, this.hide_class );

				this.cart_loaded = false;

				for( var i=0; i<this.cart.ids.length; i++ )
				{
					random_product_cart_obj = $( 'random_' + this.cart.ids[i] );
					if( random_product_cart_obj )
					{
						random_product_cart_container = random_product_cart_obj.up( '.' + this.price_container_class );
						Element.addClassName( random_product_cart_obj, this.to_cart_buttons_class );
						Element.removeClassName( random_product_cart_container, this.inbasket_class );
					}

					product_cart_obj = $( 'tocart_' + this.cart.ids[i] );
					if( product_cart_obj )
					{
						product_cart_container = product_cart_obj.up( '.' + this.price_container_class );
						Element.addClassName( product_cart_obj, this.to_cart_buttons_class );
						Element.removeClassName( product_cart_container, this.inbasket_class );
					}
				}
				this.loadCart();
				this.cart = {};
				this.cart.ids = new Array();
				this.cart.data = new Array();
				window.setTimeout( this.closeOrderForm.bind( this ), 3000 );
			}

			return false;
		},

		closeOrderForm: function()
		{
			Element.addClassName( this.order_form, this.hide_class );
		},

		showMessage: function( message )
		{
			if( message == '' || message == undefined  )
			{
				if( this.status.innerHTML.length > 0 )
				{
					Element.update( this.status, '' );
					Element.addClassName( this.status, this.hide_class );
				}
			}
			else
			{
				Element.update( this.status, message );
				Element.removeClassName( this.status, this.hide_class );
			}
			return true;
		},

		toggleCart: function(  )
		{
			if( !this.cart_loaded ) this.loadCart();

			if( Element.hasClassName( this.toggler_container, this.hide_class ) )
				Element.removeClassName( this.toggler_container, this.hide_class )
			else
				Element.addClassName( this.toggler_container, this.hide_class )
		},

		init: function( obj )
		{
			obj.onclick = function() { return false };
			Event.observe( obj, 'click', this.toCart.bind( this, obj ) );
		},

		toCart: function( obj )
		{
			if( this.add_to_cart_in_process ) return false;

			this.add_to_cart_in_process = true;
			this.product_cart = obj;

			this.request = new Ajax.Request
				(
					'add_to_cart',
					{
						method: 'post',
						parameters: { catalogue_stc_id: this.product_cart.id.split('_')[1], cart_loaded: this.cart_loaded },
						onComplete: this.updateProductPrice.bind( this )
					}
				);
		},

		updateProductPrice: function( request )
		{
			this.json = eval( '(' + request.responseText + ')' );

			if( request.responseText == '0' )
			{
				this.add_to_cart_in_process = false;
				return false;
			}

			++this.products_count_in_cart;
			this.toggler.innerHTML = ( this.products_count_in_cart ) ? this.text_selected + this.products_count_in_cart + this.text_products : this.text_basket_empty ;

			if( this.product_cart.id.split('_')[0] == 'tocart' )
			{
				Element.removeClassName( this.product_cart, this.to_cart_buttons_class );
				Element.addClassName( this.product_cart.up( '.' + this.price_container_class ), this.inbasket_class );

				var random_product = $('random_' + this.product_cart.id.split('_')[1]);
				if( random_product )
				{
					Element.removeClassName( random_product, this.to_cart_buttons_class );
					Element.addClassName( random_product.up( '.' + this.price_container_class ), this.inbasket_class );
				}
			}
			else
			{
				Element.removeClassName( this.product_cart, this.to_cart_buttons_class );
				Element.addClassName( this.product_cart.up( '.' + this.price_container_class ), this.inbasket_class );

				var tocart = $('tocart_' + this.product_cart.id.split('_')[1]);
				if( tocart )
				{
					Element.removeClassName( tocart, this.to_cart_buttons_class );
					Element.addClassName( tocart.up( '.' + this.price_container_class ), this.inbasket_class );
				}
			}

			if( this.cart_loaded )
			{
				var product_id = this.json[0].product_id;
				this.cart.ids.push( product_id );
				this.cart.data.push( { price: this.json[0].price, amount: this.json[0].amount } );

				this.json[0].totalprice = this.json[0].price * this.json[0].amount;

				var out = '';
				out += this.cart_template.evaluate( this.json[0] );

				var sum = 0;
				for( var i=0; i<this.cart.data.length; i++ )
				{
					sum += ( this.cart.data[i].amount * this.cart.data[i].price );
				}

				this.total_sum.innerHTML = sum;
				this.total_amount.innerHTML = this.cart.ids.length;

				this.table = $( 'cart_products_container' );
				if( !this.table )
				{
					Element.update( this.cart_content, '<table id="cart_products_container" width="100%" cellpadding="0" cellspacing="0" style="font-size: 0.7em;"></table>');
					this.table = $( 'cart_products_container' );
				}

				if( !this.table.down('tbody') )
				{
					this.table.innerHTML = out;
				}
				else
				{
					var tbody = this.table.down('tbody');
					out = tbody.innerHTML + out;
					Element.update( tbody, out );
				}

				this.cartInit( false );
			}
			if( this.products_count_in_cart )
			{
				Element.removeClassName( this.cart_button, this.hide_class );
			}

			this.add_to_cart_in_process = false;
		},

		loadCart: function()
		{
			if( this.open_cart_in_process ) return false;

			this.open_cart_in_process = true;

			this.request = new Ajax.Request
				(
					'load_cart',
					{
						method: 'post',
						onComplete: this.completeLoadCart.bind( this )
					}
				);
			return false;
		},

		completeLoadCart: function( request )
		{
			this.json = eval( '(' + request.responseText + ')' );

			var total_sum = 0;

			if( request.responseText != 0 )
				this.products_count_in_cart = this.json.length;
			else
				this.products_count_in_cart = 0;

			this.toggler.innerHTML = ( this.products_count_in_cart ) ? this.text_selected + this.products_count_in_cart + this.text_products : this.text_basket_empty ;

			out = '<table id="cart_products_container" width="100%" cellpadding="0" cellspacing="0" style="font-size: 0.7em;">';
			for( var i=0; i<this.json.length; i++ )
			{
				this.json[i].totalprice = this.json[i].price * this.json[i].amount;
				out += this.cart_template.evaluate(this.json[i]);
				total_sum += this.json[i].totalprice;

				this.cart.ids.push( this.json[i].product_id );
				this.cart.data.push( { price: this.json[i].price, amount: this.json[i].amount } );
			}
			out += '</table>';

			this.table = $( 'cart_products_container' );
			Element.update( this.cart_content, out);

			this.total_amount.innerHTML = this.cart.data.length;
			this.total_sum.innerHTML = total_sum;

			if( this.json.length > 0 )
				this.cartInit( false );


			if( this.products_count_in_cart )
			{
				Element.removeClassName( this.cart_button, this.hide_class );
			}
			else
			{
				Element.addClassName( this.cart_button, this.hide_class );
			}

			this.cart_loaded = true;
			this.open_cart_in_process = false;
		},

		cartInit: function( product_id )
		{
			if( product_id )
			{
				up_amount_button = $( 'up_' + product_id );
				down_amount_button = $( 'down_' + product_id );
				input_amount_button = $( 'input_' + product_id );
				delete_product_button = $( 'delete_' + product_id );

				this.initChangeAmountButtons( up_amount_button, down_amount_button, input_amount_button, delete_product_button );
			}
			else
			{
				up_amount_buttons = $A( this.toggler_container.getElementsByClassName( 'up' ) );
				down_amount_buttons = $A( this.toggler_container.getElementsByClassName( 'down' ) );
				input_amount = $A( this.toggler_container.getElementsByClassName( 'amount_value' ) );
				delete_from_cart = $A( this.toggler_container.getElementsByClassName( 'delete_buttons' ) );

				for( var i=0; i<up_amount_buttons.length; i++ )
				{
					this.initChangeAmountButtons( up_amount_buttons[i], down_amount_buttons[i], input_amount[i], delete_from_cart[i] );
				}
			}

			return true;
		},

		initChangeAmountButtons: function( up, down, input, delete_from_cart )
		{
			//Event.observe( input, 'focus', this.firstValueToMemory.bind( this, input ) );
			Event.observe( up, 'click', this.requestToChangeAmount.bind( this, input, 'up' ) );
			Event.observe( down, 'click', this.requestToChangeAmount.bind( this, input, 'down' ) );
			Event.observe( input, 'blur', this.requestToChangeAmount.bind( this, input, '' ) );
			Event.observe( delete_from_cart, 'click', this.deleteProductFromCart.bind( this, delete_from_cart ) );

			return true;
		},

		firstValueToMemory: function( obj )
		{
			this.first_amount = parseInt( obj.value );
		},

		requestToChangeAmount: function( amount_obj, direction )
		{
			this.firstValueToMemory( amount_obj );
			if( this.change_amount_in_process ) return false;
			this.amount_obj = amount_obj;
			this.amount = 0;
			this.change_amount_in_process = true;

			switch( direction )
			{
				case 'up':
					this.amount = parseInt(this.amount_obj.value) + 1;
					break;
				case 'down':
					if( parseInt( this.amount_obj.value ) > 1 )
					{
						this.amount = parseInt(this.amount_obj.value) - 1;
					}
					else
					{
						this.amount_obj.value = this.first_amount;
						this.change_amount_in_process = false;
						return false;
					}
					break;
				case '':
					this.amount = parseInt(this.amount_obj.value);

					if( ( this.amount < 1 ) || ( this.first_amount == this.amount ) )
					{
						this.amount_obj.value = this.first_amount;
						this.change_amount_in_process = false;
						return false;
					}
					break;
			}

			this.request = new Ajax.Request
				(
					'change_amount',
					{
						method: 'post',
						parameters: { amount_value: this.amount, product_id: this.amount_obj.id.split('_')[1] },
						onComplete: this.completeChangeAmount.bind( this )
					}
				);
		},

		completeChangeAmount: function( request )
		{
			if( request.responseText == '1' )
			{
				product_id = this.amount_obj.id.split('_')[1];
				index = this.cart.ids.indexOf( product_id );
				if( index != -1 )
				{
					this.amount_obj.value = this.amount;
					this.cart.data[index].amount = this.amount;
					total_price = this.cart.data[index].price * this.cart.data[index].amount;
					$( 'total_price_' + product_id ).innerHTML = total_price;
				}

				sum = 0;
				for( var i=0; i<this.cart.data.length; i++ )
				{
					sum += ( this.cart.data[i].amount * this.cart.data[i].price );
				}
				this.total_sum.innerHTML = sum;

				this.first_amount = this.amount;
			}
			this.change_amount_in_process = false;
			return true;
		},

		deleteProductFromCart: function( obj )
		{
			if( this.delete_product_in_process ) return false;

			if( !confirm( this.msg_delete_product ) ) return false;

			this.delete_product_in_process = true;
			this.current_delete_button = obj;

			this.request = new Ajax.Request
				(
					'delete_from_cart',
					{
						method: 'post',
						parameters: { product_id: this.current_delete_button.id.split('_')[1] },
						onComplete: this.deleteProductFromCartInPage.bind( this )
					}
				);
		},

		deleteProductFromCartInPage: function( request )
		{
			this.delete_product_in_process = false;
			if( request.responseText == '1' )
			{
				--this.products_count_in_cart;
				this.toggler.innerHTML = ( this.products_count_in_cart ) ? this.text_selected + this.products_count_in_cart + this.text_products : this.text_basket_empty ;

				var product_id = this.current_delete_button.id.split('_')[1];

				index = this.cart.ids.indexOf( product_id );

				if( index != -1 )
				{
					this.cart.data[index] = null;
					this.cart.ids[index] = null;

					this.cart.data = this.cart.data.compact();
					this.cart.ids = this.cart.ids.compact();

					var row = $( 'row_' + product_id );

					Element.remove( row );

					sum = 0;
					for( var i=0; i<this.cart.data.length; i++ )
					{
						sum += ( this.cart.data[i].amount * this.cart.data[i].price );
					}

					this.total_amount.innerHTML = this.cart.ids.length;
					this.total_sum.innerHTML = sum;
				}

				product_cart_obj = $( 'tocart_' + product_id );
				random_product_cart_obj = $( 'random_' + product_id );

				if( random_product_cart_obj )
				{
					random_product_cart_container = random_product_cart_obj.up( '.' + this.price_container_class );
					Element.addClassName( random_product_cart_obj, this.to_cart_buttons_class );
					Element.removeClassName( random_product_cart_container, this.inbasket_class );
				}

				if( product_cart_obj )
				{
					product_cart_container = product_cart_obj.up( '.' + this.price_container_class );
					Element.addClassName( product_cart_obj, this.to_cart_buttons_class );
					Element.removeClassName( product_cart_container, this.inbasket_class );
				}

			}

			if( this.products_count_in_cart )
			{
				Element.removeClassName( this.cart_button, this.hide_class );
			}
			else
			{
				Element.addClassName( this.cart_button, this.hide_class );
			}


		}
	}