/******************************************************************
* Script name: Link fader (http://projects.impenetrable.org/linkfader/)
* Version: 1.0
* Date: 12.05.02
* Usage: Freeware - You may modify this script as you wish,
* as long as you don't remove or edit this header comment.
*
* Script by: Fayez Zaheer (viol8r on #webdesign [uk.zanet.org.za])
* Email: fayez at impenetrable.org
* Web site: http://impenetrable.org
* Original idea: http://anarchos.xs.mw/fade.phtml
******************************************************************/

// This script will no longer overwrite your current onmouseover and
// onmouseout attributes - it will instead skip those links. If you would
// still like to fade them, add findLink(this.id) to your onmouseover
// and clearFade() to your onmouseout, like so -
// <a href="#" onmouseover="findLink(this.id); yourFunction()"
// onmouseout="clearFade(); yourSecondFunction()">

if(!d)var d=document;

// Fade-to color without the # (6 character value only!)
var fadeTo = "FF8C00"; // FBAC5E  FFAA22

// Fade in color increment/decrement by
var fiBy = 6;

// Fade out color increment/decrement by
var foBy = 10;

// Speed - milliseconds between each color change in the fade
// Less than 10ms doesn't really make all that much difference, so
// 10 is the minimum effective value.
var speed = 20;

// Class name of links to NOT fade (i.e. ignore)
// var ignoreClass = "somebogusvalue" if you don't want to
// use this feature. Alternatively, add onmouseover="clearFade()"
// to the link you do not wish to fade.
var ignoreClass = "ignore";

// No more changes required (unless you know what you are doing)
// Enjoy... and email me and let me know what site(s) you are using it on :)
var opera, ie, dom, x = 0, oc, fader, ocs = new Array();

if(navigator.userAgent.indexOf("Opera") != -1) opera = true
else if(d.all&&!opera) ie = true
else if(!d.all&&d.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 currentcolor(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 = d.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(currentcolor(index));
if(d==1) fc = convert2Dec(fadeTo)
else fc = convert2Dec(ocs[x]);
temp = convert2Dec(currentcolor(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(d.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 = currentcolor(x);
fader = setInterval("fade(" + x + ", 1)", speed);
}
}

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

function fadeInit()
{
if(opera||ie||dom) {
for(var i=0;i<document.links.length;i++) {
ocs[i] = currentcolor(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=fadeInit;