function add_to_cart_kva(aid, kva) {
	url = "IboxServlet"
				+ "?p=IXS805"
				+ "&OPT=ADD"  
				+ "&AID=" 
				+ aid
				+ "&KVA=" 
				+ kva;
	AjaxRequest(url, CartHandler);
}
function add_to_cart(aid) {
	url = "IboxServlet"
				+ "?p=IXS805"
				+ "&OPT=ADD"  
				+ "&AID=" 
				+ aid
				+ "&KVA=" 
				+ 1;
	AjaxRequest(url, CartHandler);
}
function CartHandler() {
	if (req.readyState == 4) {
		document.getElementById('shoppingbag').innerHTML = req.responseText;
	}
}