DoomRL Boots Calculator

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN"
   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">
<html>

<head>
    <meta charset="utf-8">
</head>

<script language="JavaScript">
    function calc(f) {


        var aciddamage = 0;
        var lavadamage = 0;

        var protect = 0;
        var firres = 0;
        var acires = 0;
        var moda = 0;


        if (f.armor.selectedIndex == 0) {
            protect = 1;
            firres = 0;
            acires = 0;
            moda = 1
        }
        if (f.armor.selectedIndex == 1) {
            protect = 2
            firres = 0;
            acires = 25
            moda = 1
        }
        if (f.armor.selectedIndex == 2) {
            protect = 2
            firres = 25
            acires = 50
            moda = 1
        }
        if (f.armor.selectedIndex == 3) {
            protect = 0
            firres = 0
            acires = 100
            moda = 1
        }
        if (f.armor.selectedIndex == 4) {
            protect = 10
            firres = 0
            acires = 0
            moda = 1
        }
        if (f.armor.selectedIndex == 5) {
            protect = 4
            firres = 0
            acires = 0
            moda = 1
        }
        if (f.armor.selectedIndex == 6) {
            protect = 0
            firres = 100
            acires = 100
            moda = 0
        }
        if (f.armor.selectedIndex == 7) {
            protect = 6
            firres = 30
            acires = 30
            moda = 0
        }

        if (moda == 1) {

            if (f.assembly[0].checked) {}
            if (f.assembly[1].checked) {
                firres = firres + 30
            }
            if (f.assembly[2].checked) {
                protect = protect + 1
            }
            if (f.assembly[3].checked) {
                firres = 100
            }
            if (f.assembly[4].checked) {
                firres = Math.min(firres + 75, 90)
                acires = Math.min(acires + 75, 90)
            }
            if (f.assembly[5].checked) {
                firres = 100
                acires = 100
            }
        }

        if (f.ber.checked) {
            if (firres < 100) {
                firres = Math.min(firres + 60, 90)
            }
            if (acires < 100) {
                acires = Math.min(acires + 60, 90)
            }
        }

        if ((f.pmod.checked) && (moda == 1)) {
            protect = protect * 2
        }

        aciddamage = Math.max(Math.floor((6 * (1 - 0.01 * acires)) - protect), 1)
        firedamage = Math.max(Math.floor((12 * (1 - 0.01 * firres)) - protect), 1)

        if (acires == 100) {
            aciddamage = 0
        }
        if (firres == 100) {
            firedamage = 0
        }

        restext = "<br>Damage taken : Acid "
        restext += aciddamage
        restext += ", Fire "
        restext += firedamage

        Result.innerHTML = restext


    }
</script>

<form>

    <br>

    <select name="armor">
        <option>Steel boots</option>
        <option>Protective boots</option>
        <option>Plasteel boots</option>
        <option>Acid-proof boots</option>
        <option>Gothic boots</option>
        <option>Phaseshift boots</option>
        <option>Enviroboots</option>
        <option>Nyarlaptotep's Boots</option>

    </select>


    &nbsp;&nbsp;
    <br> Power mod :
    <input type="checkbox" name="pmod">&nbsp;&nbsp; Berserk :
    <input type="checkbox" name="ber">
    <br>
    <br>Assembly :
    <br>
    <input type="radio" id="plain" name="assembly" checked>Plain &nbsp;&nbsp;
    <input type="radio" id="fir" name="assembly">Fireproof &nbsp;&nbsp;
    <input type="radio" id="grap" name="assembly">Grappling
    <br>
    <input type="radio" id="lava" name="assembly">Lava&nbsp;&nbsp;
    <input type="radio" id="env" name="assembly">Environmental &nbsp;&nbsp;
    <input type="radio" id="cerb" name="assembly">Cerberus &nbsp;&nbsp;
    <br>
    <br>
    <input type="button" value="Calculate" onclick="calc(this.form);">
    <br>


    <div id="Result"></div>


</form>

</html>