/**
 * gujCookie class
 * Can be used to create, read and erase cookies
 *
 * @author: Kay Schewe <schewe.kay@guj.de>
 */

var gujCookie = {};

gujCookie.createCookie = function (name, value, days, domain) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
    var expires = "; expires=" + date.toGMTString();
  }
  else {
    var expires = "";
  }
  if (null != domain) {
    domain = '; domain='+domain;
  }
  document.cookie = name+"="+value+expires+"; path=/"+domain;
}

gujCookie.readCookie = function (name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') {
      c = c.substring(1,c.length);
    } 
    if (c.indexOf(nameEQ) == 0) {
      return c.substring(nameEQ.length,c.length);
    } 
  }
  return null;
}
  
gujCookie.eraseCookie = function (name) {
  createCookie(name,"",-1);
}