[danik.js]

Наверно должно быть так:

function calcTotal() {
	var weight = 0;
	for ( var i = 0; i < form.weight.length; i++) {
		weight += form.weight[i].checked * +form.weight[i].value;
	}
	var price = +form.price.value;
	var deliveryPrice = 0.1 * price;

	form.pricedeliv.value = deliveryPrice;
	form.dostavkas.value = weight;
	form.itog.value = weight + price + deliveryPrice + huyPoimiChe;
}