Add A Spin Control To Quantity Field Before Add The Ordered Quantity To A Shop Cart Array

Mar 19, 2011

I am trying to add a spin control to my quantity field before i add the ordered quantity to a shop cart array. The way its set up at the moment if you click the deincrement arrow it actually goes into negative numbers. (no good coz people cant order a negative number eh#$@#$@) This the

<head> Code
<!---sPIN BUTTONS TO UP QUANTITY--->
<script type="text/javascript">
function changeVal(n) {
document.forms[0].quantity.value =parseInt(document.forms[0].quantity.value) + n;
}
</script>
[Code]

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I have an online shopping cart and some of the products are sold in boxes of 6. So I am trying to write some code that will alert the customer if they have entered a quantity that isn't some multiple of six.

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