HistoryCrumbs.user.js

Modifications

I just changed the crumbListShow() function to

1. Show add the breadcrumbs as the first child element of the div with id='content', and
2. Not show pages in the list multiple times, and
3. Just save the first part of the title (using ' - ' as a delimiter).

The second modification is a bit messy, and some people probably wont want it.

I also added the UserScript block at the top and the top level function call.

/*
Copyright Justin Whitford 2006.
  http://www.whitford.id.au/
Perpetual, non-exclusive license to use this code is granted
on the condition that this notice is left in tact.
*/

// ==UserScript==
// @name		historyCrumb
// @namespace	http://no.name.space/
// @description	Display percentage of plays and statistics on user profile
// @include	http://wiki3.cosc.canterbury.ac.nz/*
// ==/UserScript==


var delim = '|';
var trailLength = 5;
var chunks;
var DAY = 24 * 60 * 60 * 1000;



doCrumbs();
function doCrumbs(){
  if(cookieTest('xxx')){
    crumbList = new CrumbList();
    if(getCookie('trailLinks')){
      var staleLinkCrumbs = getCookie('trailLinks').split(delim);
      var staleTextCrumbs = getCookie('trailText').split(delim);
      var startPos=
        (staleTextCrumbs.length<trailLength ||
        document.location==staleLinkCrumbs[staleLinkCrumbs.length-1])
        ?0:1;
      for(i=startPos;i<staleLinkCrumbs.length;i++){
        crumbList.add(staleLinkCrumbs[i],staleTextCrumbs[i]);
      }
    }
    if(document.location!=crumbList.links[crumbList.links.length-1]){
      crumbList.add(document.location,document.title);
    }
    setCookie('trailLinks',crumbList.links.join(delim),1);
    setCookie('trailText',crumbList.text.join(delim),1);
    crumbList.output();
  }
}
function CrumbList(){
  this.links=new Array();
  this.text=new Array();
  this.add = crumbListAdd;
  this.output = crumbListShow;
}
  function crumbListAdd(href,text){
    this.links[this.links.length]=href;
    this.text[this.text.length]=text;
  }
  function crumbListShow(){
  var contentDiv = document.getElementById('content');
  var linkParen = document.createElement('span');
  
    for(var i in this.links){
    var haveWeBeenHereBefore = 'false';
	for(var j in this.links){
	    if (haveWeBeenHereBefore != 'true' && j < i && this.links[j] == this.links[i]) {
			// we have been here before
			haveWeBeenHereBefore = 'true';
		} else if (this.links[j] == this.links[i] && j < i ) {
			// first time here, add the link
			haveWeBeenHereBefore = 'false';
		}
	}
	if (haveWeBeenHereBefore == 'false') {
		var linkElem = document.createElement('a');
		if(i==this.links.length-1){
			linkElem.innerText = ( ((i==0)?"":" | ") + this.text[i].split(' - ')[0] );
	    }else{
			linkElem.href = this.links[i];
			linkElem.innerText = ((i==0)?"":" | ")+this.text[i].split(' - ')[0];
	    }
		linkParen.appendChild(linkElem);
	  }
    }
	contentDiv.insertBefore(linkParen,contentDiv.firstChild);
  }


function cookieTest(name){
  try{
    setCookie(name,'true',1);
    chunks = document.cookie.split("; ");
    return (getCookie(name)=='true');
  }catch(e){
    return false;
  }
}

function getCookie(name) {
  var returnVal = null;
  for (var i in chunks) {
    var chunk = chunks[i].split("=");
    returnVal = (chunk[0] == name)
      ?unescape(chunk[1])
      :returnVal;
  }
  return returnVal;
}

function setCookie(name, value, days) {
  if (value != null && value != "" && days > 0){
    var expiry=
      new Date(new Date().getTime() + days * DAY);
    document.cookie=
      name +"="+ escape(value) +"; expires="
      + expiry.toGMTString();
    chunks = document.cookie.split("; ");
  }
}