/*
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.

Modified by Seth Voltz <seth@designgods.net> 2010.08.15
* Added titleSep to strip off trailing components of the title
* Formatting fix
* Added displayDelim for configurable output display
*/

var delim = '|';
var displayDelim = ' &rArr; '
var titleSep = ' » '
var trailLength = 5;
var chunks;
var DAY = 24 * 60 * 60 * 1000;

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]) {
			title = document.title;
			if((pos = title.indexOf(titleSep)) > 0) {
				title = title.substring(0,pos);
			}
			crumbList.add(document.location,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(){
	for(var i in this.links){
//		if( i == this.links.length - 1 ) {
//			document.write((( i == 0 ) ? "" : displayDelim ) + this.text[i] );
//		} else {
			document.write((( i == 0 ) ? "" : displayDelim ) + "<a href='" + this.links[i] + "'>" + this.text[i] + "</a>" );
//		}
	}
}


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("; ");
	}
}