function checkField(fieldId)
{
    var fieldObj = document.getElementById(fieldId);
/*
    var msgBox = document.getElementById("msgBox");
         
    msgBox.innerHTML = "All fields are required, except child's last name.<br><br>";
    var buttonNode = document.createElement("span");
    buttonNode.innerHTML = "Close";
    buttonNode.className = "button";
    buttonNode.style.textAlign = "center";
    buttonNode.style.width = "25%";
    buttonNode["onclick"] = new Function("hideObject('msgBox')");
    // buttonNode["onclick"] = new Function("handleBox('msgBox', fieldId)");
    msgBox.appendChild(buttonNode);
*/

    if (fieldObj.value.length <= 0)     
    {
        // unhideObject('msgBox');
        // setFocus('msgBox');
        alert("All fields are required, except child's last name.");
        // setFocus(fieldId);
    }
}

function handleBox(boxId, fieldId)
{
    hideObject(boxId);
    setFocus(fieldId);
}

function setFocus(objId)
{
    var obj = document.getElementById(ObjId);
    obj.focus();
}

function unhideObject(objId)
{
   var obj = document.getElementById(objId);
   obj.style.display = 'block';
}

function hideObject(objId)
{
   var obj = document.getElementById(objId);
   obj.style.display = 'none';
}

function checkFields(formName)
{
    var fields_pass = 1;
    var formObj = document.getElementById(formName);

    for (var i=0; i < formObj.elements.length; ++i)
    {
        if (formObj.elements[i].length <= 0)
        {
            alert("All fields are required.");
            fields_pass = 0;
            window.location = "index.php?goto=order";
        }
    }
}

function InitTotals (formName)
{
    formObj = document.getElementById(formName);
    CalculateTotal(formObj);
}

function adjustQty(adjustment, itemObj, cart)
{
    itemQty = parseInt(adjustment) + parseInt(itemObj.value);
    if (itemQty >= 0)
    {
        itemObj.value = itemQty;
    }
    CalculateTotal(cart);
}

function CalculateTotal(cart)
{
    var order_total = 0;

    // Run through all the cart fields
    for (var i=0; i < cart.elements.length; ++i)
    {
        // Get the current field
        form_field = cart.elements[i];

        // Get the field's name
        field_name = form_field.name;

        // Is it a "item" field?
        if (field_name.substring(0,4) == "item")
        {
            // Get the price for the item
            priceObj = document.getElementById('price_' + field_name);
            price_value = priceObj.innerHTML;
            item_price = parseFloat(price_value.substring(1));

            // Get the quantity
            item_quantity = parseInt(form_field.value);

            // Update the order total
            if (item_quantity >= 0)
            {
                item_total = item_quantity * item_price;
                var itemtotalObj = document.getElementById('total_' + field_name);
                itemtotalObj.innerHTML = '$' + round_decimals(item_total, 2);

                order_total += item_total;
            }
        }
    }

    // Display the total rounded to two decimal places
    var grandtotalObj = document.getElementById('grand_total');
    grandtotalObj.innerHTML = '$' + round_decimals(order_total, 2);
}

/* This script is Copyright (c) Paul McFedries and 
Logophilia Limited (http://www.mcfedries.com/).
Permission is granted to use this script as long as 
this Copyright notice remains in place. */

function round_decimals(original_number, decimals) {
    var result1 = original_number * Math.pow(10, decimals)
    var result2 = Math.round(result1)
    var result3 = result2 / Math.pow(10, decimals)
    return pad_with_zeros(result3, decimals)
}

function pad_with_zeros(rounded_value, decimal_places) {

    // Convert the number to a string
    var value_string = rounded_value.toString()
    
    // Locate the decimal point
    var decimal_location = value_string.indexOf(".")

    // Is there a decimal point?
    if (decimal_location == -1)
    {
        // If no, then all decimal places will be padded with 0s
        decimal_part_length = 0
        
        // If decimal_places is greater than zero, tack on a decimal point
        value_string += decimal_places > 0 ? "." : ""
    }
    else
    {
        // If yes, then only the extra decimal places will be padded with 0s
        decimal_part_length = value_string.length - decimal_location - 1
    }
    
    // Calculate the number of decimal places that need to be padded with 0s
    var pad_total = decimal_places - decimal_part_length
    
    if (pad_total > 0)
    {
        // Pad the string with 0s
        for (var counter = 1; counter <= pad_total; counter++) 
            value_string += "0"
    }
    return value_string
}