var cookieLifeTimeHours = 90 * 24;
var cookiePath = "/";

/*
WM_setCookie(), WM_readCookie(), WM_killCookie()
A set of functions that eases the pain of using cookies.

Source: Webmonkey Code Library
(http://www.hotwired.com/webmonkey/javascript/code_library/)

Author: Nadav Savio
Author Email: nadav@wired.com
*/


// This next little bit of code tests whether the user accepts cookies.
var WM_acceptsCookies = false;
if(document.cookie == '') {
    document.cookie = 'WM_acceptsCookies=yes'; // Try to set a cookie.
    if(document.cookie.indexOf('WM_acceptsCookies=yes') != -1) {
    WM_acceptsCookies = true;
    }// If it succeeds, set variable
} else { // there was already a cookie
  WM_acceptsCookies = true;
}


function WM_setCookie (name, value, hours, path, domain, secure) {
    if (WM_acceptsCookies) { // Don't waste your time if the browser doesn't accept cookies.
    var not_NN2 = (navigator && navigator.appName
               && (navigator.appName == 'Netscape')
               && navigator.appVersion
               && (parseInt(navigator.appVersion) == 2))?false:true;

    if(hours && not_NN2) { // NN2 cannot handle Dates, so skip this part
        if ( (typeof(hours) == 'string') && Date.parse(hours) ) { // already a Date string
        var numHours = hours;
        } else if (typeof(hours) == 'number') { // calculate Date from number of hours
        var numHours = (new Date((new Date()).getTime() + hours*3600000)).toGMTString();
        }
    }
    document.cookie = name + '=' + escape(value) + ((numHours)?(';expires=' + numHours):'') + ((path)?';path=' + path:'') + ((domain)?';domain=' + domain:'') + ((secure && (secure == true))?'; secure':''); // Set the cookie, adding any parameters that were specified.
    }
} // WM_setCookie


function WM_readCookie(name) {
    if(document.cookie == '') { // there's no cookie, so go no further
    return false;
    } else { // there is a cookie
    var firstChar, lastChar;
    var theBigCookie = document.cookie;
    firstChar = theBigCookie.indexOf(name + "=");    // find the start of 'name'
    var NN2Hack = firstChar + name.length;
    if((firstChar != -1) && (theBigCookie.charAt(NN2Hack) == '=')) { // if you found the cookie
        firstChar += name.length + 1; // skip 'name' and '='
        lastChar = theBigCookie.indexOf(';', firstChar); // Find the end of the value string (i.e. the next ';').
        if(lastChar == -1) lastChar = theBigCookie.length;
        return unescape(theBigCookie.substring(firstChar, lastChar));
    } else { // If there was no cookie of that name, return false.
        return false;
    }
    }   
} // WM_readCookie

function WM_killCookie(name, path, domain) {
  var theValue = WM_readCookie(name); // We need the value to kill the cookie
  theValue = '';
  if(theValue) {
      document.cookie = name + '=' + theValue + '; expires=Fri, 13-Apr-1970 00:00:00 GMT' + ((path)?';path=' + path:'') + ((domain)?';domain=' + domain:''); // set an already-expired cookie
  }
} // WM_killCookie

function cookieAddIds(cookieName, idList) {
    WM_setCookie(cookieName, idList.split(',').join('|'), cookieLifeTimeHours, cookiePath);
}

function cookieAddId(cookieName, id) {
    var current = WM_readCookie(cookieName);
    if (current != false) {
        var currentValues = current.split('|');
        for(var i=0; i < currentValues.length; i++) {
            if(currentValues[i] == id) {
                return;
            }
        }
        current = current + "|" + id;
    } else {
        current = id;
    }
    WM_setCookie(cookieName, current, cookieLifeTimeHours, cookiePath);
}

function cookieDeleteId(cookieName, id) {
    var current = WM_readCookie(cookieName);
    if (current) {
        var currentValues = current.split('|');
        var newValues = new Array();
        for(var i=0; i < currentValues.length; i++) {
            if(currentValues[i] != id) {
                newValues[newValues.length] = currentValues[i];
            }
        }
        current = newValues.join('|');
        WM_setCookie(cookieName, current, cookieLifeTimeHours, cookiePath);
    }
}

function cookieGetIdArray(cookieName) {
    var current = WM_readCookie(cookieName);
    if (current) {
        return current.split('|');
    } else {
        return new Array();
    }
}

function cookieDeleteAllIds(cookieName) {
    WM_setCookie(cookieName, '', cookieLifeTimeHours, cookiePath);
    //WM_killCookie(cookieName, cookiePath);
}