Just wonder how i can add a Calculation of a percentage once i have options with values selected. For example
I have checkbox options with values

1 - 50.00
2 - 15.00

once you hit submit it show a cost summary but i would like to add a tax option in the summary before it is sent.

Is that possible?

This might help.
http://www.coffeecup.com/forums/web-for … art-total/

thanks for the response. My followup question is i just want it to show in the summary not on the form.

Place some css to hide your form element.

ugh im so stumped with this, just broke my form. not a guru at writing code.

Is there a way to maybe use the cart summary or cart total tag and make a change to that?

I'm not sure what you mean.

These values. Where are these settings being stored. If i could find out where these are being stored withing the form i could maybe add another field called [_Cart_tax] with a value to multiply for my tax.

With the form builder you have to have an input on your form for JQuery to populate your calculated value. This input can be hidden with display:none to keep it from being seen. It can't be hidden with conditionals as any input hidden with conditionals doesn't get submitted.

ok so according to your code. I would need to add all my items i want calculated, i have approx 51 items that have a value attached.

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script> <script type="text/javascript">$(document).ready(function(){
$('#item1_number_1'ADD HERE?).keyup(function(){
var valone = $('#item1_number_1' ADD HERE?).val();
var valtwo = 1.03;
var total = (valone * valtwo);
$('#item2_number_1' ADD HERE?).val(total.toFixed(2));
});
});</script>

so would i have to add each item name in separate lines or add to existing lines.