<!-- THREE STEPS TO INSTALL BEST PRICE:

1. Copy the coding into the HEAD of your HTML document
2. Add the onLoad event handler into the BODY tag
3. Put the last coding into the BODY of your HTML document -->

<!-- STEP ONE: Paste this code into the HEAD of your HTML document -->

<HEAD>

<SCRIPT LANGUAGE="JavaScript">
<!-- Original: WarpGear Software (bbcalculator@warpgear.com) -->
<!-- Web Site: http://www.warpgear.com/developer -->

<!-- This script and many more are available free online at -->
<!-- The JavaScript Source!! http://javascript.internet.com -->

<!-- Begin
var max_units = 200; // quantities in excess of max_units all have the same unit price
var currency = "$"; // currency sign used in 'formatMessage()'
// Edit this function to reflect your discount prices!
function getDiscountPrice(units) {
// Note: It is important to work your way down from max to min amounts!
if (units >= max_units) return 4;
if (units >= 100) return 6;
if (units >= 50) return 8;
if (units >= 25) return 10;
if (units >= 10) return 13;
if (units >= 5) return 16;
if (units >= 2) return 17.50;
if (units == 1) return 19.95;
if (units <= 0) return 0;
}
function getNumberOfUnits() {
var units = document.calculator.units.value;
return (units == "") ? 0 : units;
}
function showResult(result) {
// adjust the following line if result must popup somewhere else
document.calculator.respons.value = result;
}
function formatMessage(units, unit_price) {
return units + " * " + currency + formatPrice(unit_price) + " = " + currency + formatPrice(units * unit_price);
}
// AltUnits (alternate units): add extra units to reach minimum for next discount price
function getAltUnits(units) {
var discount_price = getDiscountPrice(units);
if (units < max_units) do { units++ } while (discount_price == getDiscountPrice(units));
return units;
}
function findPrice() {
var units = getNumberOfUnits();
var unit_price = getDiscountPrice(units);
var alt_units = getAltUnits(units);
var alt_unit_price = getDiscountPrice(alt_units);
var result;
if ((units * unit_price) < (alt_units * alt_unit_price))
result = formatMessage(units, unit_price);
else
result = formatMessage(alt_units, alt_unit_price);
showResult(result);
}
function formatPrice(value) {
var result= Math.floor(value) + ".";
var cents = 100 * (value-Math.floor(value)) + 0.5;
result += Math.floor(cents / 10);
result += Math.floor(cents % 10);
return result;
}
function filterNonNumeric(field) {
var result = new String();
var numbers = "0123456789";
var chars = field.value.split(""); // create array
for (i = 0; i < chars.length; i++) {
if (numbers.indexOf(chars[i]) != -1) result += chars[i];
}
if (field.value != result) field.value = result;
}
// End -->
</script>

</HEAD>

<!-- STEP TWO: Insert the onLoad event handler into your BODY tag -->

<BODY onLoad="findPrice()">

<!-- STEP THREE: Copy this code into the BODY of your HTML document -->

<table border="1" cellspacing="0" cellpadding="3" width="300">
<tr>
<td>Single unit license</td>
<td width=50 align=right>$19.95</td>
</tr>
<tr>
<td>License for 2 to 4 units</td>
<td width=50 align=right> $17.50</td>
</tr>
<tr>
<td>License for 5 to 9 units</td>
<td width=50 align=right>$16.00</td>
</tr>
<tr>
<td>License for 10 to 24 units</td>
<td width=50 align=right> $13.00</td>
</tr>
<tr>
<td>License for 25 to 49 units</td>
<td width=50 align=right>$10.00</td>
</tr>
<tr>
<td>License for 50 to 99 units</td>
<td width=50 align=right> $8.00</td>
</tr>
<tr>
<td>License for 100 to 199 units</td>
<td width=50 align=right> $6.00</td>
</tr>
<tr>
<td>License for 200 or more units</td>
<td width=50 align=right> $4.00</td>
</tr>
</table>
<br>
<form name=calculator>
Units:
<input type=text value="1" name="units" onkeydown="findPrice()" onKeyUp="filterNonNumeric(this); findPrice()" onkeypress="findPrice()" size="4">
<input type=text onfocus="this.blur()" name="respons" size="24" style="border:0; font-weight:bold;">
</form>

<p><center>
<font face="arial, helvetica" size"-2">Free JavaScripts provided<br>
by <a href="http://javascriptsource.com">The JavaScript Source</a></font>
</center><p>

<!-- Script Size: 4.45 KB -->