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

(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 = 25;

var url_addProductToBasket = 'addProduct.php';

var url_removeProductFromBasket = 'removeProduct.php';

var txt_totalPrice = '<br />No. Docs: ';



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 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 = ''; 

		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/global/but_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);

			

		}

		//un comment this to have total 

		//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 == ''){

		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		

}