// jorgie's breadcrumb script

// main function
function LeaveCrumbs(title,sep,group,count,timeout) {
  var DOMAIN = '';
  var PATH = '/';
  var MAX_CRUMBS = 10;
  var result = new String('');
  var death = new Date();
  var links = new Array(MAX_CRUMBS); // we allways store max_crumbs
  var names = new Array(MAX_CRUMBS); // even if we only display 'count' of them
  
  if(count < 1) count = 5;   // force at least one crum
  if(count > MAX_CRUMBS) count = MAX_CRUMBS; // no more than MAX_CRUMBS crumbs

  if(title == '') title = document.title;
 
  sep = sep + ""; //force to string
  if(sep == 'undefined') sep = ' | ';
  if(sep == '') sep = ' | ';
    
  group = group + "";  //force to string
  if(group == 'undefined') group = 'mucrumbs';
  if(group == '') path = "mucrumbs";
  
  if(timeout < 1) timeout = 1;
  if(timeout > 60) timeout = 60;
  
  death.setTime(death.getTime() + timeout * 60 * 1000);

  for(var x=MAX_CRUMBS-1;x>=0;x--) {
    links[x] = getCookie(group + 'Link' + x);
    names[x] = getCookie(group + 'Name' + x);
    if(names[x] == null) continue;
    if(links[x] == null) continue;
    if(x >= count) continue; // only display 'count' crumbs
    if(result.length > 0) result += sep;
    if(names[x] == title)
      result += names[x];
    else
      result += '<a href="' + links[x] + '" class="breadcrumbs-links">' + names[x] + '</a>';
  }
  
  // only update cookies if we are not on the same page as the newest cookie  
  if(links[0] != document.location) {  
    var y;
    setCookie(group + 'Name0',title,death,'/','');
    setCookie(group + 'Link0',document.location,death,PATH,DOMAIN);  
    for(var x=0;x<MAX_CRUMBS-1;x++) {
      y=x+1;
      if((names[x] == null) || (links[x] == null)) {
        continue;
      }
      else {
        setCookie(group + 'Name' + y,names[x],death,PATH,DOMAIN);
        setCookie(group + 'Link' + y,links[x],death,PATH,DOMAIN);
      }
    }
  }

  if(names[0] != title) {
    if(result.length > 0) result += sep;
    result += title;
  }

  document.write(result);  
}

// *** Begin MS Cookie Functions ***

   var caution = false

   // name - name of the cookie
   // value - value of the cookie
   // [expires] - expiration date of the cookie
   // (defaults to end of current session)
   // [path] - path for which the cookie is valid
   // (defaults to path of calling document)
   // [domain] - domain for which the cookie is valid
   // (defaults to domain of calling document)
   // [secure] - Boolean value indicating if
   // the cookie transmission requires a secure transmission
   // * an argument defaults when it is assigned null as a placeholder
   // * a null placeholder is not required for trailing omitted arguments
   function setCookie(name, value, expires, path, domain, secure) {
      var curCookie = name + "=" + escape(value) +
         ((expires) ? "; expires=" + expires.toGMTString() : "") +
         ((path) ? "; path=" + path : "") +
         ((domain) ? "; domain=" + domain : "") +
         ((secure) ? "; secure" : "")
      if (!caution || (name + "=" + escape(value)).length <= 4000)
         document.cookie = curCookie
      else
         if (confirm("Cookie exceeds 4KB and will be cut!"))
            document.cookie = curCookie
            
   }

   // name - name of the cookie
   // * return string containing value
   // of specified cookie or null if cookie
   // does not exist
   function getCookie(name) {
      var prefix = name + "="
      var cookieStartIndex = document.cookie.indexOf(prefix)
      if (cookieStartIndex == -1)
         return null
      var cookieEndIndex = document.cookie.indexOf(";", cookieStartIndex +
         prefix.length)
      if (cookieEndIndex == -1)
         cookieEndIndex = document.cookie.length
      return unescape(document.cookie.substring(cookieStartIndex +
         prefix.length,
   cookieEndIndex))
   }

   // name - name of the cookie
   // [path] - path of the cookie
   // (must be same as path used to create cookie)
   // [domain] - domain of the cookie
   // (must be same as domain used to create cookie)
   // * path and domain default if assigned
   // null or omitted if no explicit argument proceeds
   function deleteCookie(name, path, domain) {
      if (getCookie(name)) {
         document.cookie = name + "=" +
         ((path) ? "; path=" + path : "") +
         ((domain) ? "; domain=" + domain : "") +
         "; expires=Thu, 01-Jan-70 00:00:01 GMT"
      }
   }

   // date - any instance of the Date object
   // * you should hand all instances of the
   // Date object to this function for "repairs"
   // * this function is taken from
   // Chapter 14, "Time and Date in JavaScript", in
   // "Learn Advanced JavaScript Programming"
   function fixDate(date) {
      var base = new Date(0)
      var skew = base.getTime()
      if (skew > 0)
         date.setTime(date.getTime() - skew)
   }

// *** End MS Cookie Functions ***