// include in tag // Encode the cookie values. The caller is required to ensure that the values // for separator and delimiter are not used in the string. // name - the name of the cookie // data - hash of key/value pairs of the cookie data // separator - single character; goes inbetween each key/value pair // (ie '=' in: key=value) // delimiter - single character; goes after each key/value pair // (ie ';' in: key=value;key=value) // expire (optional) - experation date function encodeCookie(name, data, separator, delimiter, expire) { var info = new Array() var i = 0; for (var key in data) { info[i] = key + separator + data[key] ++i; } var value = info.join(delimiter) setCookie(name, value, expire) } // Decode the cookie values. // name - the name of the cookie // separator - see encodeCookie() // delimiter - see encodeCookie() function decodeCookie(name, separator, delimiter) { var stuff = getCookie(name); // now seperate it into key value pairs var data = new Object () if (stuff) { var info = new Array() info = stuff.split(delimiter) for (var i = 0; i < info.length; ++i) { var each = new Array() each = info[i].split(separator) data[each[0]] = each[1] } } return data } // Sets cookie values and escapes invalide charaters in the value. // Expiration date is optional // Takes in name of the cookie and its value. name must be a valid // variable name. function setCookie(name, value, expire) { document.cookie = name + "=" + escape(value) + ((expire == null) ? "" : ("; expires=" + expire.toGMTString())) + "; path=/" } // returns the cookie value unescaped function getCookie(name) { var search = name + "=" // if there are any cookies if (document.cookie.length > 0) { offset = document.cookie.indexOf(search) // if cookie exists if (offset != -1) { offset += search.length // set index of beginning of value end = document.cookie.indexOf(";", offset) // set index of end of cookie value if (end == -1) end = document.cookie.length return unescape(document.cookie.substring(offset, end)) } } }