// JavaScript Document - panel price calculator
var clothImgs = ["images/cloth/none.jpg", "images/cloth/T12duck.jpg", "images/cloth/T10duck.jpg", "images/cloth/T12primed.jpg", "images/cloth/T10primed.jpg", "images/cloth/Txtrasmoooth.jpg", "images/cloth/Tmedsmooth.jpg", "images/cloth/Tcoarse.jpg"]; //none, 12, 10, 12 primed, 10 primed, xtra smooth,medium smooth, coarse
var clothLinks = ["#", "pricer-canvas.html#12duck", "pricer-canvas.html#10duck", "pricer-canvas.html#12primed", "pricer-canvas.html#10primed", "pricer-canvas.html#xtrasmoooth", "pricer-canvas.html#medsmooth", "pricer-canvas.html#coarse"]; //none, 12, 10, 12 primed, 10 primed, xtra smooth,medium smooth, coarse

function imglinkBySel(preId, imgIndex) {
    var d = document;
    var linkID = preId + "Link";
    var imgID = preId + "Thumb";
    var imgSrc = clothImgs[imgIndex];
    var linkSrc = clothLinks[imgIndex];
    if (!imgSrc || !linkSrc || !d.getElementById) return;
    var linkObj = d.getElementById(linkID);
    var imgObj = d.getElementById(imgID);
    if (linkObj) linkObj.href = linkSrc;
    if (imgObj) imgObj.src = imgSrc;
    if (imgIndex == 3 || imgIndex == 4) {
        if (document.forms.strpricer.primecoats.options[1].value != 1) {
            var newOption = document.createElement("option");
            newOption.appendChild(document.createTextNode("1 Coat (for Pre-Primed)"));
            newOption.setAttribute("value", "1");
            document.forms.strpricer.primecoats.insertBefore(newOption, document.forms.strpricer.primecoats.childNodes[2]);
        }
    } else if (document.forms.strpricer.primecoats.options[1].value == 1) {
        document.forms.strpricer.primecoats.remove(1);
    }
}

function clothPrice() {
    var inflation = .03; //messy way to increase prices
    var strlength = parseFloat(document.forms.strpricer.strlength.value, 10);
    var strheight = parseFloat(document.forms.strpricer.strheight.value, 10);
    if (isNaN(strlength)) {
        strlength = 0;
    }
    if (isNaN(strheight)) {
        strheight = 0;
    }
    var squareinch = strheight * strlength;
    if (!(squareinch)) {
        var strtext = "Please enter dimensions for your stretcher.\n";
        document.forms.strpricer.strnotes.value = strtext;
        return;
    };
    var clothtype = parseInt(document.forms.strpricer.cmaterial.value, 10);
    if (isNaN(clothtype)) {
        clothtype = 0;
    }
    if (!(clothtype)) {
        document.forms.strpricer.cprice.value = "$0.00";
        document.forms.strpricer.ctotprice.value = "$0.00";
        return;
    };
    var primed = parseInt(document.forms.strpricer.primecoats.value, 10);
    var primetype = parseFloat(document.forms.strpricer.primetype.value, 10);
    var pprice = 0;
    var cbase = .06;
    var pbase = .042;
    var cmulti = [0, 0, .12, .5, .8, 1.5, 1, .7]; //none, 12, 10, 12 primed, 10 primed, xtra smmoth,medium smooth, coarse
    var pmulti = .4;
    if (isNaN(strheight)) {
        strheight = 0;
    }
    if (isNaN(strlength)) {
        strlength = 0;
    }
    var tempprice = 0;
    var primecost = 0;
    var extracoats = 0;
    if (squareinch > 11999) {
        cmodifier = .049;
        pmodifier = .0332;
    } else if (squareinch > 10699) {
        cmodifier = .048;
        pmodifier = .033;
    } else if (squareinch > 9599) {
        cmodifier = .0475;
        pmodifier = .0325;
    } else if (squareinch > 8799) {
        cmodifier = .047;
        pmodifier = .0323;
    } else if (squareinch > 7999) {
        cmodifier = .0465;
        pmodifier = .032;
    } else if (squareinch > 7299) {
        cmodifier = .046;
        pmodifier = .0305;
    } else if (squareinch > 6499) {
        cmodifier = .0455;
        pmodifier = .03;
    } else if (squareinch > 5999) {
        cmodifier = .045;
        pmodifier = .0295;
    } else if (squareinch > 5499) {
        cmodifier = .0445;
        pmodifier = .029;
    } else if (squareinch > 4999) {
        cmodifier = .044;
        pmodifier = .0285;
    } else if (squareinch > 4599) {
        cmodifier = .043;
        pmodifier = .028;
    } else if (squareinch > 4199) {
        cmodifier = .042;
        pmodifier = .0275;
    } else if (squareinch > 3799) {
        cmodifier = .041;
        pmodifier = .027;
    } else if (squareinch > 3299) {
        cmodifier = .040;
        pmodifier = .026;
    } else if (squareinch > 2899) {
        cmodifier = .039;
        pmodifier = .025;
    } else if (squareinch > 2499) {
        cmodifier = .037;
        pmodifier = .024;
    } else if (squareinch > 1999) {
        cmodifier = .036;
        pmodifier = .023;
    } else if (squareinch > 1599) {
        cmodifier = .035;
        pmodifier = .02;
    } else if (squareinch > 1299) {
        cmodifier = .032;
        pmodifier = .017;
    } else if (squareinch > 999) {
        cmodifier = .026;
        pmodifier = .015;
    } else if (squareinch > 699) {
        cmodifier = .02;
        pmodifier = .012;
    } else if (squareinch > 399) {
        cmodifier = .015;
        pmodifier = .01;
    } else if (squareinch > 199) {
        cmodifier = .01;
        pmodifier = .007;
    } else if (squareinch > 0) {
        cmodifier = 0;
        pmodifier = 0;
    }
    cprice = (cbase - cmodifier) * squareinch;
    cprice = cprice + cmulti[clothtype] * cprice;
    if (cprice < 7) {
        cprice = 7;
    }
    if (primed > 0) {
        pprice = (pbase - pmodifier) * squareinch;
        pxtra = pmulti * pprice;
        if (pxtra < 4) {
            pxtra = 4;
        }
        if (pprice < 7) {
            pprice = 7;
        }
        if (primed == 1) {
            pprice = (pprice + pxtra) / 2;
        } else {
            pprice = pprice + pxtra * (primed - 1);
        }
        if (primetype) {
            pprice *= primetype;
        }
    }
    cprice = cprice + inflation * cprice;
    pprice = pprice + inflation * pprice;
    totalprice = cprice + pprice;
    totalprice = Math.round(100 * totalprice) / 100;
    totalprice = totalprice.toFixed(2);
    cprice = cprice.toFixed(2);
    document.forms.strpricer.cprice.value = "$" + cprice;
    pprice = pprice.toFixed(2);
    document.forms.strpricer.pprice.value = "$" + pprice;
    document.forms.strpricer.ctotprice.value = "$" + totalprice;
}