/* Smooth scrolling
   Changes links that link to other parts of this page to scroll
   smoothly to those links rather than jump to them directly, which
   can be a little disorienting.
   
   sil, http://www.kryogenix.org/
   
   v1.0 2003-11-11
   v1.1 2005-06-16 wrap it up in an object
*/

var ss = {
  fixAllLinks: function() {
    // Get a list of all links in the page
    var allLinks = document.getElementsByTagName('a');
    // Walk through the list
    for (var i=0;i<allLinks.length;i++) {
      var lnk = allLinks[i];
      if ((lnk.href && lnk.href.indexOf('#') != -1) && 
          ( (lnk.pathname == location.pathname) ||
	    ('/'+lnk.pathname == location.pathname) ) && 
          (lnk.search == location.search)) {
        // If the link is internal to the page (begins in #)
        // then attach the smoothScroll function as an onclick
        // event handler
        ss.addEvent(lnk,'click',ss.smoothScroll);
      }
    }
  },

  smoothScroll: function(e) {
    // This is an event handler; get the clicked on element,
    // in a cross-browser fashion
    if (window.event) {
      target = window.event.srcElement;
    } else if (e) {
      target = e.target;
    } else return;

    // Make sure that the target is an element, not a text node
    // within an element
    if (target.nodeName.toLowerCase() != 'a') {
      target = target.parentNode;
    }
  
    // Paranoia; check this is an A tag
    if (target.nodeName.toLowerCase() != 'a') return;
  
    // Find the <a name> tag corresponding to this href
    // First strip off the hash (first character)
    anchor = target.hash.substr(1);
    // Now loop all A tags until we find one with that name
    var allLinks = document.getElementsByTagName('a');
    var destinationLink = null;
    for (var i=0;i<allLinks.length;i++) {
      var lnk = allLinks[i];
      if (lnk.name && (lnk.name == anchor)) {
        destinationLink = lnk;
        break;
      }
    }
  
    // If we didn't find a destination, give up and let the browser do
    // its thing
    if (!destinationLink) return true;
  
    // Find the destination's position
    var destx = destinationLink.offsetLeft; 
    var desty = destinationLink.offsetTop;
    var thisNode = destinationLink;
    while (thisNode.offsetParent && 
          (thisNode.offsetParent != document.body)) {
      thisNode = thisNode.offsetParent;
      destx += thisNode.offsetLeft;
      desty += thisNode.offsetTop;
    }
  
    // Stop any current scrolling
    clearInterval(ss.INTERVAL);
  
    cypos = ss.getCurrentYPos();
  
    ss_stepsize = parseInt((desty-cypos)/ss.STEPS);
    ss.INTERVAL =
setInterval('ss.scrollWindow('+ss_stepsize+','+desty+',"'+anchor+'")',10);
  
    // And stop the actual click happening
    if (window.event) {
      window.event.cancelBubble = true;
      window.event.returnValue = false;
    }
    if (e && e.preventDefault && e.stopPropagation) {
      e.preventDefault();
      e.stopPropagation();
    }
  },

  scrollWindow: function(scramount,dest,anchor) {
    wascypos = ss.getCurrentYPos();
    isAbove = (wascypos < dest);
    window.scrollTo(0,wascypos + scramount);
    iscypos = ss.getCurrentYPos();
    isAboveNow = (iscypos < dest);
    if ((isAbove != isAboveNow) || (wascypos == iscypos)) {
      // if we've just scrolled past the destination, or
      // we haven't moved from the last scroll (i.e., we're at the
      // bottom of the page) then scroll exactly to the link
      window.scrollTo(0,dest);
      // cancel the repeating timer
      clearInterval(ss.INTERVAL);
      // and jump to the link directly so the URL's right
      location.hash = anchor;
    }
  },

  getCurrentYPos: function() {
    if (document.body && document.body.scrollTop)
      return document.body.scrollTop;
    if (document.documentElement && document.documentElement.scrollTop)
      return document.documentElement.scrollTop;
    if (window.pageYOffset)
      return window.pageYOffset;
    return 0;
  },

  addEvent: function(elm, evType, fn, useCapture) {
    // addEvent and removeEvent
    // cross-browser event handling for IE5+,  NS6 and Mozilla
    // By Scott Andrew
    if (elm.addEventListener){
      elm.addEventListener(evType, fn, useCapture);
      return true;
    } else if (elm.attachEvent){
      var r = elm.attachEvent("on"+evType, fn);
      return r;
    } else {
      alert("Handler could not be removed");
    }
  } 
}

ss.STEPS = 25;

ss.addEvent(window,"load",ss.fixAllLinks);
/* Smooth scrolling ends */

/* ------------------------------------------------------------------------------------- */

/* Fading Anchors */
<!-- Fade Script Version 4.0 (c) Anarchos July 2001 http://anarchos.xs.mw/fade.phtml -->
<!-- Courtesy of SimplytheBest.net - http://simplythebest.net/scripts/ -->
//------------------------------------------------
startColor = "#ffffff"; // MouseOut link color
endColor = "#000000"; // MouseOver link color
stepIn = 17; // delay when fading in
stepOut = 25; // delay when fading out
autoFade = false;
sloppyClass = true;
//------------------------------------------------

hexa = new makearray(16);
for(var i = 0; i < 10; i++)
hexa[i] = i;
hexa[10]="a"; hexa[11]="b"; hexa[12]="c";
hexa[13]="d"; hexa[14]="e"; hexa[15]="f";

var version = parseInt(navigator.appVersion)
var appName = navigator.appName
var ns4 = version>=4 && appName=="Netscape"

if (ns4) { //Netscape 4+
	document.onmouseover = doN4mouseover;
	document.onmouseout = doN4mouseout;
} else { //other
	document.onmouseover= domouseover;
	document.onmouseout= domouseout;
}

startColor = dehexize(startColor.toLowerCase());
endColor = dehexize(endColor.toLowerCase());
var fadeId = new Array();

function dehexize(Color){
	var colorArr = new makearray(3);
	for (i=1; i<7; i++){
		for (j=0; j<16; j++){
			if (Color.charAt(i) == hexa[j]){
				if (i%2 !=0)
					colorArr[Math.floor((i-1)/2)]=eval(j)*16;
				else
					colorArr[Math.floor((i-1)/2)]+=eval(j);
			}
		}
	}
	return colorArr;
}

function domouseover() {
	if(document.all){
		var srcElement = event.srcElement;
		if ((srcElement.tagName == "A" && autoFade) || srcElement.className == "fade" || (sloppyClass && srcElement.className.indexOf("fade") != -1))
			fade(startColor,endColor,srcElement.uniqueID,stepIn);
	}
}

function domouseout() {
	if (document.all){
		var srcElement = event.srcElement;
		if ((srcElement.tagName == "A" && autoFade) || srcElement.className == "fade" || (sloppyClass && srcElement.className.indexOf("fade") != -1))
			fade(endColor,startColor,srcElement.uniqueID,stepOut);
	}
}
function doN4mouseover(event) {
	var srcElement=event.target;
	if ((srcElement.tagName == "A" && autoFade) || srcElement.className == "fade" || (sloppyClass && srcElement.className.indexOf("fade") != -1))
		nfade(startColor,endColor,srcElement,stepIn);
}

function doN4mouseout(event) {
		var srcElement = event.target; 
		if ((srcElement.tagName == "A" && autoFade) || srcElement.className == "fade" || (sloppyClass && srcElement.className.indexOf("fade") != -1))
		 nfade(endColor,startColor,srcElement,stepOut);
}

function makearray(n) {
	this.length = n;
	for(var i = 1; i <= n; i++)
	this[i] = 0;
	return this;
}

function hex(i) {
	if (i < 0)
		return "00";
	else if (i > 255)
		return "ff";
	else
		return "" + hexa[Math.floor(i/16)] + hexa[i%16];
}

function setColor(r, g, b, element) {
	var hr = hex(r);
	var hg = hex(g);
	var hb = hex(b);
	element.style.color = "#"+hr+hg+hb;
}


function fade(s,e, element,step){
	var sr = s[0];
	var sg = s[1];
	var sb = s[2];

	var er = e[0];
	var eg = e[1];
	var eb = e[2];

	if (fadeId[0] != null && fade[0] != element){  //check have we already faded this?
		setColor(sr,sg,sb,eval(fadeId[0]));   // no, set the first color
		var i = 1;
		while(i < fadeId.length){             //get ready to fade
			clearTimeout(fadeId[i]);
			i++;
		}
	}
        //MSIE must setup timeouts using strings        
	for(var i = 0; i <= step; i++) { //timeouts fall like dominos
		fadeId[i+1] = setTimeout("setColor(Math.floor(" +sr+ " *(( " +step+ " - " +i+ " )/ " +step+ " ) + " +er+ " * (" +i+ "/" +
		step+ ")),Math.floor(" +sg+ " * (( " +step+ " - " +i+ " )/ " +step+ " ) + " +eg+ " * (" +i+ "/" +step+
		")),Math.floor(" +sb+ " * ((" +step+ "-" +i+ ")/" +step+ ") + " +eb+ " * (" +i+ "/" +step+ ")),"+element+");",i*step);
	}
	fadeId[0] = element; // oneshot
}
function nfade(s,e, element,step){ 
	var sr = s[0];
	var sg = s[1];
	var sb = s[2];

	var er = e[0];
	var eg = e[1];
	var eb = e[2];

	if (fadeId[0] != null && fade[0] != element){  //check have we already faded this?
		setColor(sr,sg,sb,eval(fadeId[0]));   // no, set the first color
		var i = 1;
		while(i < fadeId.length){             //get ready to fade
			clearTimeout(fadeId[i]);
			i++;
		}
	}
        //Netscape can call SetTimeout using objects, making for more readable code
	for(var i = 0; i <= step; i++) { 
		fadeId[i+1] = setTimeout(
					setColor,
					i*step,
					Math.floor(sr*((step-i)/step) + er*(i/step)),
					Math.floor(sg*((step-i)/step) + eg*(i/step)),
					Math.floor(sb*((step-i)/step) + eb*(i/step)),
					element
					);
	}
	fadeId[0] = element; //oneshot
}