function purchase(p_id, p_desc, p_cost, postage, completion_args) {
		paypal_mode="https://www.paypal.com/cgi-bin/webscr?";
		business="jaimejpatel@hotmail.com";
		//business="lynton@lyntonblack.net";
		//business="rahulontour@gmail.com";
		
		if (p_cost == 0) { p_cost = postage; postage = 0; }
		
		paypal_purchase_url = paypal_mode
							+ 'cmd=_xclick'
							+ '&business=' + business
							+ '&item_name=' + p_desc
							+ '&item_number=' + p_id
							+ '&amount=' + p_cost
							+ '&shipping=' + postage
							+ '&currency_code=GBP'
							+ '&no_note=0'
							+ '&currency_code=GBP'
							+ '&cpp_header_image=http://www.stunningstraps.com/images/150_logo.jpg'
							+ '&image_url=http://www.stunningstraps.com/images/150_logo.jpg'
							+ '&notify_url=' + 'http://www.stunningstraps.com/completion.php'
							/*+ '&cancel_return=' + 'http://www.stunningstraps.com/'*/
							+ '&return=' + 'http://www.stunningstraps.com/thanks.php'
							+ '&custom=' + completion_args;

		PayPal = window.open(paypal_purchase_url,'PayPal','width=800,height=550,menubar=yes,statusbar=yes,resizable=yes,scrollbars=yes');
		PayPal.opener.location.href='http://www.stunningstraps.com/shop.php?do=reset';
	}