Hi,

I have this situation regarding client side Javascript.

I use this script to do some calculations with the numbers taken from some 
input type text forms (some of the inputs are dynamically generated with 
parts of their name also dynamically generated and some of the inputs are 
static with their names static).

This is placed in HEAD:
------------------------
<SCRIPT language=Javascript>
function amount() {
var amount=0;
for(i=0;i<document.invoice.length;i++)
{
if (document.invoice[i].name.substring(0,5)=="price")
{
amount = amount + parseFloat(document.invoice[i].value);
}
}
amount = amount + parseFloat(document.invoice.shipping.value);
document.invoice.result.value = amount;

tax=Math.floor(7*amount)/100; // trick to keep the last 2 decimals but 
it's not working
total = amount - tax;
document.invoice.tax.value=tax;
document.invoice.total.value=total;
}
</SCRIPT>
------------------------

And here are the input forms:
------------------------
<!-- this is the dynamic generated input  - its value is dynamically 
generated but also a part of its name -->
<input type="text" name="price_9" class=input_price value="24,00" 
onChange="suma()">
<!-- here is finishing -->

<!-- this is the dynamic generated input  - its value is dynamically 
generated but also a part of its name -->
<input type="text" name="price_5" class=input_price value="133,50" 
onChange="suma()">
<!-- here is finishing -->

<!-- this is the dynamic generated input  - its value is dynamically 
generated but also a part of its name -->
<input type="text" name="price_11" class=input_price value="24,00" 
onChange="suma()">
<!-- here is finishing -->

<!-- This is the static input - its name it's static and its value -->
<input type="text" name="shipping" class=input_price value="3,90" 
onChange="suma()">
<!-- here is finishing -->

<!-- this is another static input where the first total is calculated - 
first using ASP and second using  Javascript - the name it's static but 
the value it's dynamically generated -->
<input type="text" name="result" class=input_result value="331,50" >
<!-- here is finishing -->

<!-- this is the input which it displays the tax deducted from the first 
total  - first it's calculated with ASP and then Javascript , its the name 
is static but the value dynamic -->
<input type="text" name="tax" class=input_price value="21,69" >
<!-- here is finishing -->

<!-- this is the input where the second total, the final total, is 
displayed after the tax has been deducted - first it's calculated using 
ASP and then Javascript -, its the name is static but the value dynamic -->
<input type="text" name="total" class=input_price value="309,81">
<!-- here is finishing -->
-----------------------------

This script is working almost but I have some problems with it:
- if I'm changing a value in the dynamically generated fields the first 
total (in the the "results" input) shows up as an integer (the 
calculations are correct but it doesn't shows me the decimals which should 
appears when you do operation with integers whcih have decimals - I only 
need the fisrt two decimals)

- another problem is at the inputs "tax" and "total".Here the numbers are 
displayed with decimals - not only with two decimals (I need only two) but 
many more.How can I manage to have only two decimals? And the total result 
it's also dispaled with "." between  integer and decimals instead 
of ",".How can I manage to have ","?

Can somebody point me in the right direction regarding this Javascript?
 I can send the HTML page if necessary to see how it looks.

Thanks,
Mircea