function addcart(amount, item_name, item_number, shipping) {
			 var url = "https://www.paypal.com/cart/add=1&business=jtwcollectibles@verizon.net";
			 /*
			 cost = parseFloat(amount);
			  if (typeof(shipping) == "undefined") {
	 			 if (cost <10) shipping = "2.50";
				 else if (cost <50) shipping = "6.00";
				 else shipping = "7.50";
			 }
			 */
			 url += "&item_name=" + item_name;
			 url += "&currency_code=USD";
			 url += "&amount=" + amount;
			 url += "&receiver_email=jtwcollectibles@verizon.net";
			 url += "&no_shipping=0";
			 url += "&no_note=0";
			 if (typeof(item_number) != "undefined") { url += "&item_number=" + item_number;}			 
			 if (typeof(shipping)    != "undefined") { url += "&shipping=" + shipping; }
		         window.open(url, 'paypal', 'width=600,height=400,scrollbars,location,resizable,status');
               }