// JavaScript Document

loadPriceList();
	var priceList;
	function loadPriceList()
	{	
		var myAjax	=	new Ajax.Request("priceList.php", {
				method:'get',
				onComplete:function(hr){
					priceList	=	hr.responseXML;
				}
				}	 	
		);
	} 
	
	function CalculatePrice(pro_id,txt_qty)
	{
		items	=	priceList.getElementsByTagName('item');		 
		for(i=0;i<items.length;i++)
		{	if(items[i].getElementsByTagName('pro_id')[0].firstChild.data==pro_id)
			{	if(txt_qty.value<=2)
					price	=	items[i].getElementsByTagName('price_1')[0].firstChild.data
				else if(txt_qty.value<=5)
					price	=	items[i].getElementsByTagName('price_3')[0].firstChild.data
				else
					price	=	items[i].getElementsByTagName('price_6')[0].firstChild.data
				tot_price	=	price*txt_qty.value;
				$('price_'+pro_id).innerHTML = tot_price.toFixed(2);
				calculateGrandTotal();				
			}	 
		}		 
	}
	
	function calculateGrandTotal()
	{	var grand_total	=	0;		 
		items	=	priceList.getElementsByTagName('item');		 
		for(i=0;i<items.length;i++)
		{	price_id	=	'price_'+items[i].getElementsByTagName('pro_id')[0].firstChild.data;
			if($(price_id))
			{	if(parseInt($(price_id).innerHTML))
				{	 grand_total	+=	parseInt($(price_id).innerHTML);
				}			
			}	
			
		}
		$('grand_total').innerHTML	=	grand_total.toFixed(2);
	}