function Cookie(document,name,hours,path,domain,secure) {
    // any VAR in "this" that does not start with a "$" will
    // be written into the cookie (read from also)
    this.$doc  = document
    this.$name = name
    if (hours)  this.$expiration=new Date((new Date()).getTime()+hours*3600000); else this.$expiration = null
    if (path)   this.$path   = path; else this.$path = null
    if (domain) this.$domain = domain; else this.$domain = null
    if (secure) this.$secure = true; else this.$secure = false
}

function CookieWrite() {
    var cookieval=""
        for(var prop in this) {
        if ((prop.charAt(0) == '$') || ((typeof this[prop]) == 'function') || prop == '') continue
	if (cookieval != "") cookieval += '&'
            cookieval+=prop+":"+escape(this[prop])
    }
    var cookie=this.$name+"="+cookieval
    if (this.$expiration) cookie+='; expires=' + this.$expiration.toGMTString()
        if (this.$path)       cookie+='; path='    + this.$path
    if (this.$domain)     cookie+='; domain='  + this.$domain
    if (this.$secure)     cookie+='; secure'
        this.$doc.cookie=cookie
}

function CookieRead() {
  var allcookies=this.$doc.cookie
  if (allcookies=="") {
    return false
  }
  var start= allcookies.indexOf(this.$name+'=')
  if (start== -1) {
    return false
  }
  start += this.$name.length+1
  var end=allcookies.indexOf(';',start)
  if (end == -1) end=allcookies.length
  var cookieval = allcookies.substring(start,end)
  var a = cookieval.split('&')
  for (var i=0;i < a.length;i++) a[i]=a[i].split(':')
  for (var i=0;i < a.length;i++) this[a[i][0]]=unescape(a[i][1])
  return true
}

function CookieGetValue() {
    var allcookies=this.$doc.cookie
    if (allcookies=="") {
        return null
    }
    var start= allcookies.indexOf(this.$name+'=')
    if (start== -1) {
        return null
    }
    start += this.$name.length+1
    var end=allcookies.indexOf(';',start)
    if (end == -1) { end=allcookies.length; }
    var cookieval = allcookies.substring(start,end)
    return cookieval;
}


function CookieDelete() {
    var cookie = this.$name+'='
        if (this.$path)   cookie+='; path='+this.$path
    if (this.$domain) cookie+='; domain='+this.$domain
    cookie+='; expires=Fri, 02-Jan-1970 00:00:00 GMT'  // MAKE IT EXPIRE!
        this.$doc.cookie=cookie
}

new Cookie()
Cookie.prototype.write = CookieWrite
Cookie.prototype.del   = CookieDelete
Cookie.prototype.read  = CookieRead
Cookie.prototype.getValue  = CookieGetValue