// NAME: cookies.js wurde erstellt mit RedDot; -citeq- Stadt Münster 
// CODE:  Livingpage® für die Stadt Hamm
// LAST CHANGE: 22.12.2005 bm@livingpage.com
// FUNCTION: Cookiemanager
// name = string equal to the name of the instance of the object
// defaultExpiration = number of units to make the default expiration date for the cookie
// expirationUnits = 'seconds' | 'minutes' | 'hours' | 'days' | 'months' | 'years' (default is 'days')
// defaultDomain = string, default domain for cookies; default is current domain minus the server name
// defaultPath = string, default path for cookies; default is '/'
function Cookiemanager(name,defaultExpiration,expirationUnits,defaultDomain,defaultPath) {
 // remember our name
 this.name = name;
 // get the default expiration
 this.defaultExpiration = this.getExpiration(defaultExpiration,expirationUnits);
 // set the default domain to defaultDomain if supplied; if not, set it to document.domain
 // if document.domain is numeric, otherwise strip off the server name and use the remainder
 this.defaultDomain = (defaultDomain)?defaultDomain:(document.domain.search(/[a-zA-Z]/) == -1)?document.domain:document.domain.substring(document.domain.indexOf('.') + 1,document.domain.length);
 // set the default path
 this.defaultPath = (defaultPath)?defaultPath:'/';
 // initialize an object to hold all the document's cookies
 this.cookies = new Object();
 // initialize an object to hold expiration dates for the doucment's cookies
 this.expiration = new Object();
 // initialize an object to hold domains for the doucment's cookies
 this.domain = new Object();
 // initialize an object to hold paths for the doucment's cookies
 this.path = new Object();
 // set an onlunload function to write the cookies
 window.onunload = new Function (this.name+'.setDocumentCookies();');
 // get the document's cookies
 this.getDocumentCookies();
 }
// gets an expiration date for a cookie as a GMT string
// expiration = integer expressing time in units (default is 7 days)
// units = 'miliseconds' | 'seconds' | 'minutes' | 'hours' | 'days' | 'months' | 'years' (default is 'days') 
Cookiemanager.prototype.getExpiration = function(expiration,units) {
 // set default expiration time if it wasn't supplied
 expiration = (expiration)?expiration:7;
 // supply default units if units weren't supplied
 units = (units)?units:'days';
 // new date object we'll use to get the expiration time
 var date = new Date();
 // set expiration time according to units supplied
 switch(units) {
  case 'years':
   date.setFullYear(date.getFullYear() + expiration);
   break;
  case 'months':
   date.setMonth(date.getMonth() + expiration);
   break;
  case 'days':
   date.setTime(date.getTime()+(expiration*24*60*60*1000));
   break;
  case 'hours':
   date.setTime(date.getTime()+(expiration*60*60*1000));
   break;
  case 'minutes':
   date.setTime(date.getTime()+(expiration*60*1000));
   break;
  case 'seconds':
   date.setTime(date.getTime()+(expiration*1000));
   break;
  default:
   date.setTime(date.getTime()+expiration);
   break;
  }
 // return expiration as GMT string
 return date.toGMTString();
 }
// gets all document cookies and populates the .cookies property with them
Cookiemanager.prototype.getDocumentCookies = function() {
 var cookie,pair;
 // read the document's cookies into an array
 var cookies = document.cookie.split(';');
 // walk through each array element and extract the name and value into the cookies property
 var len = cookies.length;
 for(var i=0;i < len;i++) {
  cookie = cookies[i];
  // strip leading whitespace
  while (cookie.charAt(0)==' ') cookie = cookie.substring(1,cookie.length);
  // split name/value pair into an array
  pair = cookie.split('=');
  // use the cookie name as the property name and value as the value
  this.cookies[pair[0]] = pair[1];
  }
 }
// sets all document cookies
Cookiemanager.prototype.setDocumentCookies = function() {
 var expires = '';
 var cookies = '';
 var domain = '';
 var path = '';
 for(var name in this.cookies) {
  // see if there's a custom expiration for this cookie; if not use default
  expires = (this.expiration[name])?this.expiration[name]:this.defaultExpiration;
  // see if there's a custom path for this cookie; if not use default
  path = (this.path[name])?this.path[name]:this.defaultPath;
  // see if there's a custom domain for this cookie; if not use default
  domain = (this.domain[name])?this.domain[name]:this.defaultDomain;
  // add to cookie string
  cookies = name + '=' + this.cookies[name] + '; expires=' + expires + '; path=' + path + '; domain=' + domain;
  document.cookie = cookies;
  }
 return true;
 }
// gets cookie value
// cookieName = string, cookie name
Cookiemanager.prototype.getCookie = function(cookieName) {
 var cookie = this.cookies[cookieName]
 return (cookie)?cookie:false;
 }
// stores cookie value, expiration, domain and path
// cookieName = string, cookie name
// cookieValue = string, cookie value
// expiration = number of units in which the cookie should expire
// expirationUnits = 'miliseconds' | 'seconds' | 'minutes' | 'hours' | 'days' | 'months' | 'years' (default is 'days')
// domain = string, domain for cookie
// path = string, path for cookie
Cookiemanager.prototype.setCookie = function(cookieName,cookieValue,expiration,expirationUnits,domain,path) {
 this.cookies[cookieName] = cookieValue;
 // set the expiration if it was supplied 
 if (expiration) this.expiration[cookieName] = this.getExpiration(expiration,expirationUnits);
 // set path if it was supplied
 if (domain) this.domain[cookieName] = domain;
 if (path) this.path[cookieName] = path;
 return true;
 }
var cookieManager = new Cookiemanager('cookieManager',1,'years');
// Fertigstellung: 20.08.2008