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

(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 = 20;
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 additem(productId,'123',12);	
}



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 items = row.cells[0].innerHTML /1;
		items = items + 1;
		row.cells[0].innerHTML = 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'; 	// 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 updateTotalPrice()

{
	var itemBox = document.getElementById('shopping_cart_items');

	// Calculating total price and showing it below the table with basket items

	var totalPrice = 0;

	if(document.getElementById('shopping_cart_totalprice')){

		for(var no=1;no<itemBox.rows.length;no++){

			totalPrice = totalPrice + (itemBox.rows[no].cells[0].innerHTML.replace(/[^0-9]/g) * itemBox.rows[no].cells[2].innerHTML);

			

		}		

		document.getElementById('shopping_cart_totalprice').innerHTML = txt_totalPrice + totalPrice.toFixed(2);

	}	
}


function removeProductFromBasket(productId)

{

	var productRow = document.getElementById('shopping_cart_items_product' + productId);

	

	var numberOfItemCell = productRow.cells[0];

	if(numberOfItemCell.innerHTML == '1'){

		productRow.parentNode.removeChild(productRow);	

	}else{

		numberOfItemCell.innerHTML = numberOfItemCell.innerHTML/1 - 1;

	}
	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		
}



function deleteitem(id)
{
xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	  {
	  alert ("Your browser does not support AJAX!");
	  return;
	  } 
	var url="js/deleteitem.php";	
	parameters="";
	parameters+="sid="+Math.random();
	parameters+="&id="+id;
	xmlHttp.onreadystatechange=function() 
	{ 
			if (xmlHttp.readyState==4)
			{ 
				document.getElementById('shopping_cart').innerHTML=xmlHttp.responseText;
			}
	}
	xmlHttp.open('POST', url, true);
	xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xmlHttp.setRequestHeader("Content-length", parameters.length);
	xmlHttp.setRequestHeader("Connection", "close");
	xmlHttp.send(parameters);
	if (document.getElementById('cartDetail')!=null){
		alert("Item Deleted");
		xmlHttp2=GetXmlHttpObject()
		xmlHttp2.onreadystatechange=function() 
		{ 
				if (xmlHttp2.readyState==4)
				{ 
					document.getElementById('cartDetail').innerHTML=xmlHttp2.responseText;
				}
		}
		url="js/cartdetail.php";
		xmlHttp2.open('POST', url, true);
		xmlHttp2.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
		xmlHttp2.setRequestHeader("Content-length", parameters.length);
		xmlHttp2.setRequestHeader("Connection", "close");
		xmlHttp2.send(parameters);	
	}
}



function additem(id,itemName, price)
{
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	  {
	  alert ("Your browser does not support AJAX!");
	  return;
	  } 
	var url="js/additem.php";
	parameters="";
	parameters+="sid="+Math.random();
	parameters+="&id="+id;
	parameters+="&big5_name="+document.getElementById('form'+id).big5_name.value;
	parameters+="&name="+document.getElementById('form'+id).name.value;
	parameters+="&quantity="+document.getElementById('form'+id).quantity.value;
	xmlHttp.onreadystatechange=function() 
	{ 
		if (xmlHttp.readyState==4)
		{ 
			document.getElementById('shopping_cart').innerHTML=xmlHttp.responseText;
			if (document.getElementById('login'))
				alert("Please login first");
		}
	}
	xmlHttp.open('POST', url, true);
	xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xmlHttp.setRequestHeader("Content-length", parameters.length);
	xmlHttp.setRequestHeader("Connection", "close");
	xmlHttp.send(parameters);
	document.getElementById('form'+id).quantity.value=1;
	
}