function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}


function changeover(id)
{
document.getElementById(id).style.background='#FFE899';
document.getElementById(id).style.borderColor='brown';
}
function changeout(id)
{
document.getElementById(id).style.background='white';
document.getElementById(id).style.borderColor='white';
}

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}

window.onload = function(e) {
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);



// from http://www.kryogenix.org
// by Scott Andrew - http://scottandrew.com
// add an eventlistener to browsers that can do it somehow.
function addEvent(obj, evType, fn)
	{
	if (obj.addEventListener)
		{
		obj.addEventListener(evType, fn, false);
		return true;
		}
	else if (obj.attachEvent)
		{
		var r = obj.attachEvent('on'+evType, fn);
		return r;
		}
	else
		{
		return false;
		}
	}

function floatImages()
	{
	// adapted from http://www.dithered.com/javascript/browser_detect/
	//**************************************************************//
	// sniff user agent
	var userAgent = navigator.userAgent.toLowerCase();

	// if Mozilla 1.4 then quit
	if ((userAgent.indexOf('gecko') != -1) && (userAgent.indexOf('gecko/') + 14 == userAgent.length) && (parseFloat(userAgent.substring(userAgent.indexOf('rv:') + 3)) == '1.4')) return;

	// if Opera then quit
	if (document.all && window.Event) return;
	//**************************************************************//

	// check this browser can cope with what we want to do
	if (!document.getElementById) return;
	var blogDiv = document.getElementById('blog');
	if (!blogDiv) return;
	if (!blogDiv.offsetWidth) return;

	blogDiv.className = (blogDiv.offsetWidth >= 500) ? "float-images" : "block-images";
	}

// Blockquote citations

// Simon Willison's work:
// http://simon.incutio.com/archive/2002/12/20/#blockquoteCitations

// Also Dunstan Orchard's work:
// http://1976design.com/blog/archive/2003/11/10/updates/
function blockquoteCite()
	{
	if (!document.createElementNS)
		{
		document.createElementNS = function(ns, elt)
			{
			return document.createElement(elt);
			}
		}
	quotes = document.getElementsByTagName('blockquote');
	for (i = 0; i < quotes.length; i++)
		{
		var cite = quotes[i].getAttribute('cite');
		// value of cite attribute should only contain URI, not any other
		if ((cite) && (cite != ''))
			{
			newlink = document.createElementNS('http://www.w3.org/1999/xhtml', 'a');
			newlink.setAttribute('href', cite);
			newlink.className = 'cite-link';
			newlink.appendChild(document.createTextNode(cite));
			newdiv = document.createElementNS('http://www.w3.org/1999/xhtml', 'cite');
			newdiv.className = 'blockquote-cite';
			newdiv.appendChild(document.createTextNode('Source: '));
			newdiv.appendChild(newlink);
			quotes[i].appendChild(newdiv);
			quotes[i].removeAttribute('cite');
			}
		}
	}

// Ins and Del tags citations
function insdelCite()
	{
	if (!document.createElementNS)
		{
		document.createElementNS = function(ns, elt)
			{
			return document.createElement(elt);
			}
		}
	var insdel = new Array(2);
	insdel[0] = document.getElementsByTagName('ins');
	insdel[1] = document.getElementsByTagName('del');
	for (var i=0; i<insdel.length; i++)
		{
		if (insdel[i])
			{
			for (var id=0; id<insdel[i].length; id++)
				{
				var isdl = insdel[i][id].getAttribute('cite');
				if ((isdl) && (isdl != ""))
					{
					idlink = document.createElementNS('http://www.w3.org/1999/xhtml', 'a');
					idlink.setAttribute('href', isdl);
					idlink.className = 'cite-link ' + (i == 0 ? 'ins-cite' : 'del-cite');
					idlink.setAttribute('title','citation of ' + (i == 0 ? 'added' : 'deleted') + ' text');
					idlink.appendChild(document.createTextNode('#'));
					insdel[i][id].appendChild(idlink);
					insdel[i][id].removeAttribute('cite');
					}
				}
			}
		}
	}

// Force IE not to show alternate text as tooltip
function noAltTooltip()
	{
	images = document.getElementsByTagName('img');
	for (var i = 0; i < images.length; i++)
		{
		var title = images[i].getAttribute('title');
		var alt = images[i].getAttribute('alt');
		if ((document.all) && (alt) && (!title))
			{
			images[i].setAttribute('title', '');
			}
		}
	}

// Nice Titles

// original code by Stuart Langridge 2003-11
// with additions to the code by other good people
// http://www.kryogenix.org/code/browser/nicetitle/
// thank you, sir

// modified by Peter Janes 2003-03-25
// http://peterjanes.ca/blog/archives/2003/03/25/nicetitles-for-ins-and-del
// added in ins and del tags

// modified by Dunstan Orchard 2003-11-18
// http://1976design.com/blog/
// added in accesskey information
// tried ever-so-hard, but couldn't work out how to do what Ethan did

// final genius touch by by Ethan Marcotte 2003-11-18
// http://www.sidesh0w.com/
// worked out how to delay showing the popups to make them more like the browser's own

// set the namespace
var XHTMLNS = 'http://www.w3.org/1999/xhtml';
var CURRENT_NICE_TITLE;

// browser sniff
var browser = new Browser();

// determine browser and version.
function Browser()
	{
	var ua, s, i;

	this.isIE = false;
	this.isNS = false;
	this.version = null;

	ua = navigator.userAgent;

	s = 'MSIE';
	if ((i = ua.indexOf(s)) >= 0)
		{
		this.isIE = true;
		this.version = parseFloat(ua.substr(i + s.length));
		return;
		}

	s = 'Netscape6/';
	if ((i = ua.indexOf(s)) >= 0)
		{
		this.isNS = true;
		this.version = parseFloat(ua.substr(i + s.length));
		return;
		}

	// treat any other 'Gecko' browser as NS 6.1.
	s = 'Gecko';
	if ((i = ua.indexOf(s)) >= 0)
		{
		this.isNS = true;
		this.version = 6.1;
		return;
		}
	}

// 2003-11-19 sidesh0w
// set delay vars to emulate normal hover delay
var delay;
var interval = 0.60;

// this function runs on window load
// it runs through all the links on the page as starts listening for actions
function makeNiceTitles()
	{
	if (!document.createElement || !document.getElementsByTagName) return;
	if (!document.createElementNS)
		{
		document.createElementNS = function(ns, elt)
			{
			return document.createElement(elt);
			}
		}

	// do regular links
	if (!document.links)
		{
		document.links = document.getElementsByTagName('a');
		}
	for (var ti=0; ti<document.links.length; ti++)
		{
		var lnk = document.links[ti];
		// * I added specific class names here..
		if (lnk.title)
			{
			lnk.setAttribute('nicetitle', lnk.title);
			lnk.removeAttribute('title');
			addEvent(lnk, 'mouseover', showDelay);
			addEvent(lnk, 'mouseout', hideNiceTitle);
			addEvent(lnk, 'focus', showDelay);
			addEvent(lnk, 'blur', hideNiceTitle);
			}
		}

	// 2003-03-25 Peter Janes
	// do ins and del tags
	var tags = new Array(2);
	tags[0] = document.getElementsByTagName('ins');
	tags[1] = document.getElementsByTagName('del');
	for (var tt=0; tt<tags.length; tt++)
		{
		if (tags[tt])
			{
			for (var ti=0; ti<tags[tt].length; ti++)
				{
				var tag = tags[tt][ti];
				if (tag.dateTime)
					{
					var strDate = tag.dateTime;
					// HTML/ISO8601 date: yyyy-mm-ddThh:mm:ssTZD (Z, -hh:mm, +hh:mm)
					var month = strDate.substring(5,7);
					var day = strDate.substring(8,10);
					if (month[0] == '0')
						{
						month = month[1];
						}
					if (day[0] == '0')
						{
						day = day[1];
						}
					var dtIns = new Date(strDate.substring(0,4), month-1, day, strDate.substring(11,13), strDate.substring(14,16), strDate.substring(17,19));
					tag.setAttribute('nicetitle', (tt == 0 ? 'Added' : 'Deleted') + ' on ' + dtIns.toString());
					addEvent(tag, 'mouseover', showDelay);
					addEvent(tag, 'mouseout', hideNiceTitle);
					addEvent(tag, 'focus', showDelay);
					addEvent(tag, 'blur', hideNiceTitle);
					}
				}
			}
		}
	}

function findPosition(oLink)
	{
	if (oLink.offsetParent)
		{
		for (var posX = 0, posY = 0; oLink.offsetParent; oLink = oLink.offsetParent)
			{
			posX += oLink.offsetLeft;
			posY += oLink.offsetTop;
			}
		return [posX, posY];
		}
	else
		{
		return [oLink.x, oLink.y];
		}
	}

function getParent(el, pTagName)
	{
	if (el == null)
		{
		return null;
		}
	// gecko bug, supposed to be uppercase
	else if (el.nodeType == 1 && el.tagName.toLowerCase() == pTagName.toLowerCase())
		{
		return el;
		}
	else
		{
		return getParent(el.parentNode, pTagName);
		}
	}

// 2003-11-19 sidesh0w
// trailerpark wrapper function
function showDelay(e)
	{
    if (window.event && window.event.srcElement)
		{
        lnk = window.event.srcElement
		}
	else if (e && e.target)
		{
        lnk = e.target
		}
    if (!lnk) return;

	// lnk is a textnode or an elementnode that's not ins/del
    if (lnk.nodeType == 3 || (lnk.nodeType == 1 && lnk.tagName.toLowerCase() != 'ins' && lnk.tagName.toLowerCase() != 'del'))
		{
		// ascend parents until we hit a link
		lnk = getParent(lnk, 'a');
		}

	delay = setTimeout("showNiceTitle(lnk)", interval * 1000);
	}