item total calculator

Hi,

On [URL=http://www.coffeehit.com.au]http://www.coffeehit.com.au[/URL]
I have a quick buy section that not only adds the items for a total, it also sends this info to a shop cart. (shop cart link disabled, having trouble parsing multi items in one pass – that’s another story).

Anyway am parsing single items to cart ok. Can see it working in [URL=http://www.coffeehit.com.au/ch_products_blends_daily.html]Coffee Blends[/URL]

Problem is that now the cart is being populated the [B]item total calc[/B] is not functioning ?

I’ve tried just about everything I know to get it going…

If someone could take a quick look I’d sure appreciate it, thanks.

BTW here is acopy of the javascript code:

[code]
<script type=”text/javascript”>
<!–
//+——————————–+
//| Please DO NOT remove |
//+——————————–+
//| |
//| Script Written by BlankMotion |
| [url]www.blankmotion.com.au[/url] |
//| |
//+——————————–+
//| Please DO NOT remove |
//+——————————–+

function sum(i)
{
sum1= eval(‘document.coffeeorder.grind’+i+’.value’)
sum2= eval(‘document.coffeeorder.weight’+i+’.value’)
cost= eval(‘document.coffeeorder.cost’+i+’.value’)
sum1 = parseInt(sum1)
sum2 = parseInt(sum2)
cost = parseInt(cost)
total=sum2*(cost+sum1)
var subtotal = eval(‘document.coffeeorder.subtotal’ + i);
subtotal.value = roundNumber(total)
}
function roundNumber(number) {
var rlength = 2; // The number of decimal places to round to
var newnumber = Math.round(number*Math.pow(10,rlength))/Math.pow(10,rlength);
return pad_with_zeros(newnumber, 2)

}
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
}
//–>
</script>
[/code]

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