function CalculateTotal(frm) {
    var order_total = 0

    // Run through all the form fields
    for (var i=0; i < frm.elements.length; ++i) {

        // Get the current field
        form_field = frm.elements[i]

        // Get the field's name
        form_name = form_field.name

        // Is it a "product" field?
        if (form_name.substring(0,4) == "PROD") {

            // If so, extract the price from the name
            item_price = parseFloat(form_name.substring(form_name.lastIndexOf("_") + 1))

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

            // Update the order total
            if (item_quantity >= 0) {
                order_total += item_quantity * item_price
            }
        }
    }

    // Display the total rounded to two decimal places
    frm.TOTAL.value = round_decimals(order_total, 2)
}

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
}

function CalculateBottles(frm) {
    var order_bottles = 0

    // Run through all the form fields
    for (var i=0; i < frm.elements.length; ++i) {

        // Get the current field
        form_field = frm.elements[i]

        // Get the field's name
        form_name = form_field.name

        // Is it a "dozen"?
        if (form_name.substring(5,9) == "DOZE") {

            // If so, extract the price from the name
            item_bottles = parseInt(12)

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

            // Update the order total
            if (item_quantity >= 0) {
                order_bottles += item_quantity * item_bottles
            }
        }
	// Is it a "single"?
        if (form_name.substring(5,9) == "SING") {

            // If so, extract the price from the name
            item_bottles = parseInt(1)

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

            // Update the order total
            if (item_quantity >= 0) {
                order_bottles += item_quantity * item_bottles
            }
        }
		
		// Is it a "Six Pack"?
        if (form_name.substring(5,9) == "SIXP") {

            // If so, extract the price from the name
            item_bottles = parseInt(6)

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

            // Update the order total
            if (item_quantity >= 0) {
                order_bottles += item_quantity * item_bottles
            }
        }
    }

    // Display the total rounded to two decimal places
    frm.BOTTLES.value = (order_bottles)
}

function CalculateDozens(frm) {
    var order_dozens = frm.BOTTLES.value / 12

    // Display the total rounded to two decimal places
    frm.DOZENS.value = Math.ceil(order_dozens)
}

function FreightTotal(frm) {
		freight = ''
		var freight_cost = 0
		for (i=0;i<frm.choice.length;i++) {
		  if (frm.choice[i].checked) {
		  	freight_cost = freight_cost + parseInt(frm.choice[i].value)
		  }
		}
		freight = freight_cost * frm.DOZENS.value
		
		frm.freight.value = round_decimals(freight, 2)
		}

function FinalTotal(frm) {
  
    A = frm.TOTAL.value
	B = frm.freight.value
	
	A = Number(A)
	B = Number (B)
	
	C = (A + B)
	
	frm.FINALTOTAL.value = round_decimals(C, 2)
}