/************************************************************************************************************
(C) www.dhtmlgoodies.com, March 2006

This is a script from www.dhtmlgoodies.com. You will find this and a lot of other scripts at our website.	

Terms of use:
You are free to use this script as long as the copyright message is kept intact. However, you may not
redistribute, sell or repost it without our permission.

Version:
	1.0	Released	March. 3rd 2006

Thank you!

www.dhtmlgoodies.com
Alf Magne Kalleland

************************************************************************************************************/

var flyingSpeed = 45;
var url_addProductToBasket = 'addProduct.php';
var url_removeProductFromBasket = 'removeProduct.php';
var txt_totalPrice = 'Total: ';


var shopping_cart_div = false;
var flyingDiv = false;
var currentProductDiv = false;

var shopping_cart_x = false;
var shopping_cart_y = false;

var slide_xFactor = false;
var slide_yFactor = false;

var diffX = false;
var diffY = false;

var currentXPos = false;
var currentYPos = false;

var ajaxObjects = new Array();


function shoppingCart_getTopPos(inputObj)
{		
  var returnValue = inputObj.offsetTop;
  while((inputObj = inputObj.offsetParent) != null){
  	if(inputObj.tagName!='HTML')returnValue += inputObj.offsetTop;
  }
  return returnValue;
}

function shoppingCart_getLeftPos(inputObj)
{
  var returnValue = inputObj.offsetLeft;
  while((inputObj = inputObj.offsetParent) != null){
  	if(inputObj.tagName!='HTML')returnValue += inputObj.offsetLeft;
  }
  return returnValue;
}
	

function addToBasket(productId)
{
	if(!shopping_cart_div)shopping_cart_div = document.getElementById('shopping_cart');
	if(!flyingDiv){
		flyingDiv = document.createElement('DIV');
		flyingDiv.style.position = 'absolute';
		document.body.appendChild(flyingDiv);
	}
	
	shopping_cart_x = shoppingCart_getLeftPos(shopping_cart_div);
	shopping_cart_y = shoppingCart_getTopPos(shopping_cart_div);

	currentProductDiv = document.getElementById('slidingProduct' + productId);
	
	currentXPos = shoppingCart_getLeftPos(currentProductDiv);
	currentYPos = shoppingCart_getTopPos(currentProductDiv);
	
	diffX = shopping_cart_x - currentXPos;
	diffY = shopping_cart_y - currentYPos;
	

	
	var shoppingContentCopy = currentProductDiv.cloneNode(true);
	shoppingContentCopy.id='';
	flyingDiv.innerHTML = '';
	flyingDiv.style.left = currentXPos + 'px';
	flyingDiv.style.top = currentYPos + 'px';
	flyingDiv.appendChild(shoppingContentCopy);
	flyingDiv.style.display='block';
	flyingDiv.style.width = currentProductDiv.offsetWidth + 'px';
	flyToBasket(productId);
	
}


function flyToBasket(productId)
{
	var maxDiff = Math.max(Math.abs(diffX),Math.abs(diffY));
	var moveX = (diffX / maxDiff) * flyingSpeed;;
	var moveY = (diffY / maxDiff) * flyingSpeed;	
	
	currentXPos = currentXPos + moveX;
	currentYPos = currentYPos + moveY;
	
	flyingDiv.style.left = Math.round(currentXPos) + 'px';
	flyingDiv.style.top = Math.round(currentYPos) + 'px';	
	
	
	if(moveX>0 && currentXPos > shopping_cart_x){
		flyingDiv.style.display='none';		
	}
	if(moveX<0 && currentXPos < shopping_cart_x){
		flyingDiv.style.display='none';		
	}
		
	if(flyingDiv.style.display=='block')setTimeout('flyToBasket("' + productId + '")',10); else ajaxAddProduct(productId);	
}

function showAjaxBasketContent(ajaxIndex)
{
	// Getting a reference to the shopping cart items table
	var itemBox = document.getElementById('shopping_cart_items');
	
	var productItems = ajaxObjects[ajaxIndex].response.split('|||');	// Breaking response from Ajax into tokens
	
	if(document.getElementById('shopping_cart_items_product' + productItems[0])){	// A product with this id is allready in the basket - just add number items
		var row = document.getElementById('shopping_cart_items_product' + productItems[0]);
		var theitems = row.cells[0].innerHTML;
		var theitemsnumber = parseFloat(theitems.substring(1,' '));
		var items = theitemsnumber / 1;
		items = items + 1;
		
		
		row.cells[0].innerHTML = items + "<input type='hidden' name='" + productItems[1] + "' value='Qty: " + items + "'>";
	
	}else{	// Product isn't allready in the basket - add a new row
		var tr = itemBox.insertRow(-1);
		tr.id = 'shopping_cart_items_product' + productItems[0]
		
		var td = tr.insertCell(-1);
		td.innerHTML = "1 <input type='hidden' name='" + productItems[1] + "' value='Qty: 1'>"; 	// Number of items
		
		
		var td = tr.insertCell(-1);
		td.innerHTML = productItems[1]; 	// Description
		
		var td = tr.insertCell(-1);
		td.style.textAlign = 'right';
		
		td.innerHTML = "$" + productItems[2]; 	// Price	
		
		var td = tr.insertCell(-1);
		var a = document.createElement('A');
		td.appendChild(a);
		a.href = '#';
		a.onclick = function(){ removeProductFromBasket(productItems[0]); };
		var img = document.createElement('IMG');
		img.src = 'images/remove.gif';
		a.appendChild(img);
		//td.innerHTML = '<a href="#" onclick="removeProductFromBasket("' + productItems[0] + '");return false;"><img src="images/remove.gif"></a>';	
	} 


	updateTotalPrice();
	
	ajaxObjects[ajaxIndex] = false;		
	
}

function filterNum(str) {
re = /^\$|,/g;
// remove "$" and ","
return str.replace(re, "");
}


function updateTotalPrice()
{
	var itemBox = document.getElementById('shopping_cart_items');
	// Calculating total price and showing it below the table with basket items
	var totalPrice = 0;
	var theqty = 0;
	if(document.getElementById('shopping_cart_totalprice')){
		for(var no=1;no<itemBox.rows.length;no++){
			theqty = itemBox.rows[no].cells[0].innerHTML.replace(/[^0-9]/g);
			theqtynumber = parseFloat(theqty.substring(1,' '));
			
			totalPrice = totalPrice + (theqtynumber * filterNum(itemBox.rows[no].cells[2].innerHTML));
			
		}		
		document.getElementById('shopping_cart_totalprice').innerHTML = txt_totalPrice + "$" + totalPrice.toFixed(2) +" + Freight";
		document.getElementById('shopping_cart_totalprice').style.border = "1px solid #333";
		document.getElementById('shopping_cart_totalprice').style.background = "#FFF";	
		document.getElementById('shopping_cart_totalprice').style.padding = "3px";	
		document.getElementById('shopping_cart_totalprice').style.font = "bold 16px Arial";			
	
		document.getElementById('shopping_cart_order').innerHTML = "<table width='100%' border='0' cellspacing='0' cellpadding='2' style='margin-top:10px;'><tr><td>Name:</td><td><input type='text' name='Name' /></td></tr><tr><td>Phone:</td><td><input type='text' name='Phone' /></td></tr><tr><td>Email:</td><td><input type='text' name='Email' /></td></tr><tr><td>Address:</td><td><textarea name='Address' rows='2'></textarea></td></tr><tr><td>Comments</td><td><textarea name='Comments' rows='3'></textarea></td></tr><tr><td>&nbsp;</td><td><input type='submit' value='Submit Order' /></td></tr></table>"
		
		document.getElementById('shopping_cart_total').innerHTML = "<input type='hidden' name='Total_Price' value='"+ txt_totalPrice + "$" + totalPrice.toFixed(2) + " + Freight'> Total does not include freight costs - Freight costs are listed at the bottom of this page<br><br>We'll contact you to arrange payment"
	}	
	
}

function removeProductFromBasket(productId)
{
	var productRow = document.getElementById('shopping_cart_items_product' + productId);
	
	var numberOfItemCell = productRow.cells[0];	
	
	var theitems = numberOfItemCell.innerHTML;
		var theitemsnumber = parseFloat(theitems.substring(1,' '));
		var items = theitemsnumber / 1;	
	
	var numberOfItemCell = productRow.cells[0];
	if(items == 1){
		productRow.parentNode.removeChild(productRow);	
	}else{
	
		newqty = items - 1;
		productRow.cells[0].innerHTML = newqty + "<input type='hidden' name='" + productRow.cells[1].innerHTML + "' value='Qty: " + newqty + "'>";
	}
	updateTotalPrice();
	ajaxRemoveProduct(productId);	
}

function ajaxValidateRemovedProduct(ajaxIndex)
{
	if(ajaxObjects[ajaxIndex].response!='OK')alert('Error while removing product from the database');
	
}

function ajaxRemoveProduct(productId)
{
	var ajaxIndex = ajaxObjects.length;
	ajaxObjects[ajaxIndex] = new sack();
	ajaxObjects[ajaxIndex].requestFile = url_removeProductFromBasket;	// Saving product in this file
	ajaxObjects[ajaxIndex].setVar('productIdToRemove',productId);
	ajaxObjects[ajaxIndex].onCompletion = function(){ ajaxValidateRemovedProduct(ajaxIndex); };	// Specify function that will be executed after file has been found
	ajaxObjects[ajaxIndex].runAJAX();		// Execute AJAX function		
}

function ajaxAddProduct(productId)
{
	var ajaxIndex = ajaxObjects.length;
	ajaxObjects[ajaxIndex] = new sack();
	ajaxObjects[ajaxIndex].requestFile = url_addProductToBasket;	// Saving product in this file
	ajaxObjects[ajaxIndex].setVar('productId',productId);
	ajaxObjects[ajaxIndex].onCompletion = function(){ showAjaxBasketContent(ajaxIndex); };	// Specify function that will be executed after file has been found
	ajaxObjects[ajaxIndex].runAJAX();		// Execute AJAX function		
}