Sliding scale calculator

[tyutghf]

Hi folks, I have been asked to make a commission calculator for a new department.

Basically, the calculations are thus

sell 0 - 10k = 0% commission
10k - 25k = 10% commission
25k - 35k = 15% commission
35k - 50k = 25% commission
50k+ = 35% commission

This calculator has to be on our website so people can see the potential they can earn by entering a figure they expect to sell in the box. Don't laugh at my attempt so far

<script type="text/javascript">

function commissionCalc(){
[indent]var enteredSales = document.getElementById("sales").value;

if (enteredSales < '10000') {
[indent]var earnings = enteredSales[/indent]
} else if (enteredSales > 10000 && enteredSales < 25000) {
[indent]var earnings = enteredSales = (enteredSales * 0.1)[/indent]

[/indent]
}

</script>

<form>
<input type='text' name='sales' />
<input type='text' name='commissionresult' />
</form>

Am I on the right track? I don't want to spend ages on it to find I've been doing it wrong, I haven't been given much time on it.

 

[ChrisHirst]

Using a switch statement is a better method.

Chris.

Indifference will be the downfall of mankind, but who cares?
Time flies like an arrow, however, fruit flies like a banana.

Never mind this jesus character, stars had to die for me to live.

 

[tyutghf]

Sorted thanks