var fadeTo = "000000";
var fiBy = 6;
var foBy = 10;
var speed = 1;
var ignoreClass = "ignore";
var opera, ie, dom, x = 0, oc, fader, ocs = new Array();

if (navigator.userAgent.indexOf("Opera") != -1) opera = true
else if (document.all && !opera) ie = true
else if (!document.all && document.getElementById) dom = true;

function convertRGB(z) {
    var newfcS = "", splitter = "";
    splitter = z.split(",");
    splitter[0] = parseInt(splitter[0].substring(4, splitter[0].length));
    splitter[1] = parseInt(splitter[1]);
    splitter[2] = parseInt(splitter[2].substring(0, splitter[2].length - 1));
    for (var q = 0; q < 3; q++) {
        splitter[q] = splitter[q].toString(16);
        if (splitter[q].length == 1) splitter[q] = "0" + splitter[q];
        newfcS += splitter[q];
    }
    return newfcS;
}

function currentColour(index) {
    var temp, cc;
    if (opera) cc = document.links[index].style.color
    else if (ie) cc = document.links[index].currentStyle.color
    else if (dom) cc = document.defaultView.getComputedStyle(document.links[index], '').getPropertyValue("color");
    if (cc.length == 4 && cc.substring(0, 1) == "#") {
        temp = "";
        for (var a = 0; a < 3; a++)
            temp += cc.substring(a + 1, a + 2) + cc.substring(a + 1, a + 2);
        cc = temp;
    }
    else if (cc.indexOf("rgb") != -1) cc = convertRGB(cc)
    else if (cc.length == 7) cc = cc.substring(1, 7)
    else cc = fadeTo;
    return cc;
}


function convert2Dec(hex) {
    var rgb = new Array();
    for (var u = 0; u < 3; u++)
        rgb[u] = parseInt(hex.substring(u * 2, u * 2 + 2), 16);
    return rgb;
}

function newRGB(f, n, d) {
    var change;
    if (d == 1) change = fiBy
    else change = foBy;
    for (var g = 0; g < 3; g++) {
        if (n[g] > f[g] && n[g] - change >= 0) n[g] -= change;
        if (n[g] < f[g] && n[g] + change <= 255) n[g] += change;
    }
    return n;
}

function fade(index, d) {
    var fc, nc, temp = new Array(), finished = false;
    nc = convert2Dec(currentColour(index));
    if (d == 1) fc = convert2Dec(fadeTo)
    else fc = convert2Dec(ocs[x]);
    temp = convert2Dec(currentColour(index));
    nc = newRGB(fc, nc, d);
    if ((nc[0] == temp[0]) && (nc[1] == temp[1]) && (nc[2] == temp[2]))
        finished = true;
    if (!finished) document.links[x].style.color = "rgb(" + nc[0] + "," + nc[1] + "," + nc[2] + ")"
    else clearInterval(fader);
}

function findLink(over) {
    if (document.layers) return;
    if (fader) {
        clearInterval(fader);
        document.links[x].style.color = "#" + ocs[x];
    }
    if (over && !this.id) this.id = over;
    x = 0;
    while (!(this.id == document.links[x].id) && (x < document.links.length))
        x++;
    if (this.id == document.links[x].id) {
        oc = currentColour(x);
        fader = setInterval("fade(" + x + ", 1)", speed);
    }
}

function clearFade() {
    if (document.layers) return;
    if (fader) clearInterval(fader);
    fader = setInterval("fade(" + x + ", 0)", speed);
}

function init() {
    for (var i = 0; i < document.links.length; i++) {
        ocs[i] = currentColour(i);
        var currentOver = document.links[i].onmouseover;
        var currentOut = document.links[i].onmouseout;
        var ignoreIt = document.links[i].className == ignoreClass;
        if (!ignoreIt) document.links[i].id = "link" + i;
        if (!currentOver && !currentOut && !ignoreIt) {
            document.links[i].onmouseover = findLink;
            document.links[i].onmouseout = clearFade;
        }
    }
}

if (opera || ie || dom) window.onload = init;