function changeshipping_multi(numb) {
  if (numb == 1) {
    var newcost = "15.00";
  }
  else {    var newnum = numb - 1;    var newcost = newnum * 7.50;    newcost = newcost + 15;    //newcost = newcost + ".00";
    newcost = newcost.toFixed(2);  
  }
  document.orderform['shipping_1'].value = newcost;
  return false;
}

function updateFormOrder() {
  var rotary_cover = 0; //document.orderform.quantity_rotary.options[document.orderform.quantity_rotary.selectedIndex].value;
  var aframe_cover = document.orderform.quantity_aframe.options[document.orderform.quantity_aframe.selectedIndex].value;
  var aframe_cover_old = '0';//document.orderform.quantity_aframe_old.options[document.orderform.quantity_aframe_old.selectedIndex].value;
  var total_covers = parseInt(rotary_cover) + parseInt(aframe_cover) + parseInt(aframe_cover_old);
  if (total_covers < 1) {
    alert('At least one CLEVACOVER must be selected.');
    return false;
  }
  changeshipping_multi(total_covers);
  var next_key = 1;
  if(rotary_cover != "0") {
    var field = document.createElement("input");    field.setAttribute("type", "hidden");    field.setAttribute("value", "CLEVACOVER-ROTARY");    field.setAttribute("name", "item_name_" + next_key);    document.forms['orderform'].appendChild(field);    field = document.createElement("input");    field.setAttribute("type", "hidden");    field.setAttribute("value", "179.95");    field.setAttribute("name", "amount_" + next_key);    document.forms['orderform'].appendChild(field);    field = document.createElement("input");    field.setAttribute("type", "hidden");    field.setAttribute("value", rotary_cover);    field.setAttribute("name", "quantity_" + next_key);    document.forms['orderform'].appendChild(field);    next_key++;  }
  if(aframe_cover != "0") {
    var field = document.createElement("input");
    field.setAttribute("type", "hidden");
    field.setAttribute("value", "CLEVACOVER-AFRAME");
    field.setAttribute("name", "item_name_" + next_key);
    document.forms['orderform'].appendChild(field);
    field = document.createElement("input");
    field.setAttribute("type", "hidden");
    field.setAttribute("value", "99.95");
    field.setAttribute("name", "amount_" + next_key);
    document.forms['orderform'].appendChild(field);
    field = document.createElement("input");
    field.setAttribute("type", "hidden");
    field.setAttribute("value", aframe_cover);
    field.setAttribute("name", "quantity_" + next_key);
    document.forms['orderform'].appendChild(field);
    next_key++;
  }

  if(aframe_cover_old != "0") {
    var field = document.createElement("input");
    field.setAttribute("type", "hidden");
    field.setAttribute("value", "CLEVACOVER-AFRAME-SECONDS");
    field.setAttribute("name", "item_name_" + next_key);
    document.forms['orderform'].appendChild(field);
    field = document.createElement("input");
    field.setAttribute("type", "hidden");
    field.setAttribute("value", "59.95");
    field.setAttribute("name", "amount_" + next_key);
    document.forms['orderform'].appendChild(field);
    field = document.createElement("input");
    field.setAttribute("type", "hidden");
    field.setAttribute("value", aframe_cover_old);
    field.setAttribute("name", "quantity_" + next_key);
    document.forms['orderform'].appendChild(field);
    next_key++;
  }
  var peg_quantity = document.orderform.peg_quantity.options[document.orderform.peg_quantity.selectedIndex].value;  var double_sided_peg_quantity = document.orderform.double_sided_peg_quantity.options[document.orderform.double_sided_peg_quantity.selectedIndex].value;  var bag_quantity = document.orderform.bag_quantity.options[document.orderform.bag_quantity.selectedIndex].value;
  if(bag_quantity != "0") {
    var field = document.createElement("input");
    field.setAttribute("type", "hidden");
    field.setAttribute("value", "PEG-BAGS");
    field.setAttribute("name", "item_name_" + next_key);
    document.forms['orderform'].appendChild(field);
    field = document.createElement("input");
    field.setAttribute("type", "hidden");
    field.setAttribute("value", "9.95");
    field.setAttribute("name", "amount_" + next_key);
    document.forms['orderform'].appendChild(field);
    field = document.createElement("input");
    field.setAttribute("type", "hidden");
    field.setAttribute("value", bag_quantity);
    field.setAttribute("name", "quantity_" + next_key);
    document.forms['orderform'].appendChild(field);
    next_key++;
  }
  if(peg_quantity != "0") {
    var field = document.createElement("input");
    field.setAttribute("type", "hidden");
    field.setAttribute("value", "CROC-PEGS");
    field.setAttribute("name", "item_name_" + next_key);
    document.forms['orderform'].appendChild(field);
    field = document.createElement("input");
    field.setAttribute("type", "hidden");
    field.setAttribute("value", "7.50");
    field.setAttribute("name", "amount_" + next_key);
    document.forms['orderform'].appendChild(field);
    field = document.createElement("input");
    field.setAttribute("type", "hidden");
    field.setAttribute("value", peg_quantity);
    field.setAttribute("name", "quantity_" + next_key);
    document.forms['orderform'].appendChild(field);
    next_key++;
  }
  if(double_sided_peg_quantity != "0") {
    var field = document.createElement("input");
    field.setAttribute("type", "hidden");
    field.setAttribute("value", "DOUBLE-SIDED-PEGS");
    field.setAttribute("name", "item_name_" + next_key);
    document.forms['orderform'].appendChild(field);
    field = document.createElement("input");
    field.setAttribute("type", "hidden");
    field.setAttribute("value", "9.95");
    field.setAttribute("name", "amount_" + next_key);
    document.forms['orderform'].appendChild(field);
    field = document.createElement("input");
    field.setAttribute("type", "hidden");
    field.setAttribute("value", double_sided_peg_quantity);
    field.setAttribute("name", "quantity_" + next_key);
    document.forms['orderform'].appendChild(field);
    next_key++;
  }
  return true; 
}