//////////////////////////////////////////////////////////////////////////////
//                         Nifty Breadcrumbs Script                         //
//////////////////////////////////////////////////////////////////////////////
// 
// This is a neat little script that takes your site's file/folder structure
// and converts it into breadcrumbs. As an added bonus, it forces you to
// create a structure that is optimal for search engines to index and rank!
//
// CONTRIBUTORS:
//
// Original Creator:
//     Paul Hirsch
//     www.paulhirsch.com - personal site
//
// Tested by:
//     International Web Developers Network (IWDN)
//     www.iwdn.net - home page
//     www.iwdn.net/index.php - forums/community where testing took place
//
// Other Contributors:
//
//     [INSERT YOUR NAME AND BRIEF DESCRIPTION OF YOUR CONTRIBUTION HERE]
//
// VERSIONS:
//
// 1.2
//     - Removed all requirements for a file extension to be set.
//     - Folder roots have been eliminated.  Now, when visitors step up the
//       breadcrumbs, they are taken to the parent folder via "../" only.
//     - Removed the script portion that parses the jumplink octothorpe. It
//       wasn't really doing anything all that useful.
//     - Updated instructions.  The script is now much easier to use!
//
// 1.1
//     - A little code cleanup.  Double quotes replaced with single quotes,
//       escaped characters unescaped.
//     - Word separators (underscore, hyphen, etc.) are now user-declared.
//     - Custom word replacement now available.  Use your own words in place
//       of your folder/file names.
// 1.0
//     - Original breadcrumbs script released.
//
// INSTRUCTIONS:
//
// 1.  Create your site structure using folders and files with useful names.
//     You may choose any character you'd like to replace spaces in your
//     URLs.  I recommend using underscores (as in the example below), but
//     this script will allow you to specify any single character you'd like
//     to be the replacement for spaces.  If you use something other than
//     underscores, you will need to make a change in the variables section.
//
//     EXAMPLE: http://www.squid.com/My_Pet_Squid/Meet_Rocky.html shows good
//     name choices to describe an area of content and the contents of a page.
//    
//     Alternatively, you can setup mod_rewrite via your .htaccess file to
//     create friendly URLs such as the one above.
//
// 2.  Fill in the settings for the variables in the next section of this
//     script.  They should be pretty self-explanatory.
//
// 3.  Add the following to your site wherever you want your breadcrumbs
//     to appear (change the path to point to wherever you put this script):
//
//     <div id="breadcrumbs"></div>
//     <script type="text/javascript" src="path/to/breadcrumbs.js"></script>
//
// LICENSE:
//
// This script is protected under General Public License (GPL).  Feel free to
// redistribute this script, so long as you do not alter any of the contents
// specifying authorship.  If you add to or modify this script, you may add
// your name to the "Other Contributors" list at the top of this script.  As
// a courtesy, please email me and let me know how you've improved my script!
// You may not profit from the direct sale of this script.  You may use this
// script in commercial endeavors however (i.e. as part of a commercial site).
//
// Email me here: http://www.paulhirsch.com/contact_me.php
//
// Copyright 2006, Paul Hirsch. All rights specified herein and within GPL
// documentation: http://www.gnu.org/licenses/gpl.txt
//
//////////////////////////////////////////////////////////////////////////////

//////////////////////////////////////////////////////////////////////////////
// Change the following variables as instructed                             //
//////////////////////////////////////////////////////////////////////////////

// Enter your domain name here, 
var url = "comp.uark.edu";

// Enter the word you want to use to describe the home page of your site
var home = "";

// Enter the character(s) you want to use to separate your breadbrumbs
var divide = "&raquo;";

// Enter text you'd like to see.  You can make this blank as well - "";
var pre = "";

// Enter the character that replaces spaces in your URL (i.e. - or _ or %20)
var sp = "_";

// Want to replace any folder names with custom names of your own?  Create
// replacement pairs in the following format: swap[i] = 'Old Words|New Words';
swap = new Array(); // Don't touch this line!
// Remove comments from swap array variables below to put them into use.
// Create additional replacement items by increasing the array number [i] as
// you add more lines.

swap[0] = 'index|';
swap[1] = '~estover|Home';
swap[2] = 'comp.uark|';
// etc.

//////////////////////////////////////////////////////////////////////////////
// DO NOT TOUCH ANYTHING BELOW THIS LINE                                    //
// unless you know damned well what you're doing!                           //
//////////////////////////////////////////////////////////////////////////////

divide = ' ' + divide + ' ';
var a = '' + window.location;
a = a.substring(0,a.lastIndexOf('.'));
var b, code, left, x, y = '';
var foo = '';

left = a.lastIndexOf("/");

if (a.substring(a.lastIndexOf('/')) == '/') {
	a = a + root;
}

b = a.substring(left+1);
b = b.replace(new RegExp(sp, 'g'),' ');

code = divide + b;
b = '/' + b;
b = b.replace(/ /g,sp);

a = a.replace(b,'');

if (a.substring(left-1) != '/') {
	do  {
		left = a.lastIndexOf('/');
		b = a.substring(left+1);
		b = b.replace(new RegExp(sp, 'g'),' ');

		code = divide + '<a href="' + foo + '">' + b + '</a>' + code;
		foo = '../' + foo;
		b = '/' + b;
		b = b.replace(/ /g,sp);

		a = a.replace(b,'');
	} while (a.substring(left-1) != '/');
}

code = code.replace(url,home);
code = (code.substring(code.indexOf('<')));
code = pre + code;

for (i=0 ; i<swap.length ; i++) {
	x = swap[i].substr(0,swap[i].lastIndexOf('|'));
	y = swap[i].substr(swap[i].lastIndexOf('|')+1);
	code = code.replace(new RegExp(x, "g"),y);
}

document.getElementById('breadcrumbs').innerHTML = code;