function fieldvalue(field){
    return eval("document.chains." + field + ".options[document.chains." + field + ".selectedIndex].value");
}

function setFields() {
    vsize = fieldvalue("size");
    if (vsize == "27+inch") {
        document.chains.metal.selectedIndex = 3;
        document.chains.metal.disabled = true;
    }
    else {
        document.chains.metal.disabled = false;
    }
}

function addChain(){
    vsize = fieldvalue("size");
    vmetal = fieldvalue("metal");
    if (vsize == ""){
      window.alert('Please select a size.');
      document.chains.size.focus();
      return;
    }
    if (vmetal == ""){
      window.alert('Please select the type of metal.');
      document.chains.metal.focus();
      return;
    }
    switch (vmetal) {
        case "Gold+Filled":
            switch (vsize) {
                case "24+inch":
                    price = "41.95";
                    break;
                case "30+inch":
                    price = "50.95";
                    break;
            }
            break;
        case "Sterling+Silver":
            switch (vsize) {
                case "24+inch":
                    price = "28.95";
                    break;
                case "30+inch":
                    price = "35.95";
                    break;
            }
            break;
        case "Stainless+Steel":
            switch (vsize) {
                case "24+inch":
                    price = "7.95";
                    break;
                case "27+inch":
                    price = "7.95";
                    break;
                case "30+inch":
                    price = "7.95";
                    break;
            }
            break;
    }
    itemURL = "https://www.paypal.com/cgi-bin/webscr?add=1&cmd=_cart&business=gifts%40sistersofcarmel.com&item_name=Chain+-+" + vsize + ",+" + vmetal + "&item_number=&amount=" + price + "&return=http%3A//www.sistersofcarmel.com/subscriberp.php&cancel_return=http%3A//www.sistersofcarmel.com/subscriber.php&no_shipping=2&cbt=Continue&currency_code=USD&bn=PP-ShopCartBF";
    window.open(itemURL,'paypal','');
    window.alert("If you would like this chain attached to a medal or crucifix you may be purchasing, please provide details in the special instructions when you check out.");
}

function fieldvalue2(field){
    return eval("document.chains2." + field + ".options[document.chains2." + field + ".selectedIndex].value");
}

function addChain2(){
    vsize = fieldvalue2("size");
    vtype = fieldvalue2("type");
    if (vsize == ""){
      window.alert('Please select a size.');
      document.chains2.size.focus();
      return;
    }
    if (vtype == ""){
      window.alert('Please select type.');
      document.chains2.type.focus();
      return;
    }
    if (vsize == "7+inch" && (vtype == "1mm+Curb" || vtype == "3mm+Figaro")) {
      window.alert('This chain does not come in this size.');
      document.chains2.size.focus();
      return;
    }
    switch (vtype) {
        case "1mm+Curb":
            series = "CH11";
            switch (vsize) {
                case "16+inch":
                    price = "20.95";
                    break;
                case "18+inch":
                    price = "22.95";
                    break;
                case "20+inch":
                    price = "24.95";
                    break;
                case "24+inch":
                    price = "26.95";
                    break;
            }
            break;
        case "1mm+Serpentine":
            series = "CH4";
            switch (vsize) {
                case "7+inch":
                    price = "14.95";
                    break;
                case "16+inch":
                    price = "28.95";
                    break;
                case "18+inch":
                    price = "31.95";
                    break;
                case "20+inch":
                    price = "34.95";
                    break;
                case "24+inch":
                    price = "40.95";
                    break;
            }
            break;
        case "2.25mm+Figure+8":
            series = "CH168";
            switch (vsize) {
                case "7+inch":
                    price = "91.95";
                    break;
                case "16+inch":
                    price = "150.95";
                    break;
                case "18+inch":
                    price = "173.95";
                    break;
                case "20+inch":
                    price = "185.95";
                    break;
                case "24+inch":
                    price = "197.95";
                    break;
            }
            break;
        case "1.25mm+Figaro":
            series = "CH8";
            switch (vsize) {
                case "7+inch":
                    price = "39.95";
                    break;
                case "16+inch":
                    price = "79.95";
                    break;
                case "18+inch":
                    price = "89.95";
                    break;
                case "20+inch":
                    price = "100.95";
                    break;
                case "24+inch":
                    price = "117.95";
                    break;
            }
            break;
        case "2mm+Figaro":
            series = "CH23";
            switch (vsize) {
                case "7+inch":
                    price = "54.95";
                    break;
                case "16+inch":
                    price = "112.95";
                    break;
                case "18+inch":
                    price = "119.95";
                    break;
                case "20+inch":
                    price = "129.95";
                    break;
                case "24+inch":
                    price = "155.95";
                    break;
            }
            break;
        case "3mm+Figaro":
            series = "CH9";
            switch (vsize) {
                case "16+inch":
                    price = "225.95";
                    break;
                case "18+inch":
                    price = "252.95";
                    break;
                case "20+inch":
                    price = "278.95";
                    break;
                case "24+inch":
                    price = "305.95";
                    break;
            }
            break;
    }
    itemURL = "https://www.paypal.com/cgi-bin/webscr?add=1&cmd=_cart&business=gifts%40sistersofcarmel.com&item_name=Chain+-+" + vsize + "+" + vtype + "+series+" + series + "&item_number=&amount=" + price + "&return=http%3A//www.sistersofcarmel.com/subscriberp.php&cancel_return=http%3A//www.sistersofcarmel.com/subscriber.php&no_shipping=2&cbt=Continue&currency_code=USD&bn=PP-ShopCartBF";
    window.open(itemURL,'paypal','');
    window.alert("If you would like this chain attached to a medal or crucifix you may be purchasing, please provide details in the special instructions when you check out.");
}