/**
* File: cookie.js
*
* This script provides the following functions and methods:
*
* Usage:
*
*
*
* Insert the
*
*
* Method: document.getBGAuthID()
*
* Arguments: none
* Returns: string: value of cookie 'BGAuthID'
* Description: If cookie 'BGAuthID' exists, return its value (a session ID);
* otherwise returns null
* Example:
*
*
* Function: GetCookie( name )
*
* This function returns the value of the named cookie or null if the
* cookie does not exist.
*
*
* Function: DeleteCookie( name, path, domain )
*
* This function deletes the named cookie, if it exists. The arguments
* 'path' and 'domain' are optional.
*
*
* Function: SetCookie( name, value, expires, path, domain, secure )
*
* Creates the named cookie (only the first argument is required).
* Argument 'expires' is a JavaScript Date object.
*
* ----------------------------------------------------------------------
*
* See the article "Persistent Client State HTTP Cookies" for more
* information about cookies in general:
* http://www.netscape.com/newsref/std/cookie_spec.html
*
*/
function _cookiesAreEnabled() {
SetCookie( "foo", "bar" );
if ( GetCookie( "foo" ) ) {
DeleteCookie( "foo" );
return true;
} else {
return false;
}
}
navigator.cookiesAreEnabled = _cookiesAreEnabled;
function _getBGAuthID() {
return GetCookie( "BGAuthID" );
}
document.getBGAuthID = _getBGAuthID;
function GetCookie( name ) {
var arg = name + "=";
var alen = arg.length;
var clen = document.cookie.length;
var i = 0;
while ( i < clen ) {
var j = i + alen;
if ( document.cookie.substring(i, j) == arg ) return getCookieVal(j);
i = document.cookie.indexOf( " ", i ) + 1;
if ( i == 0 ) break;
}
return null;
}
function DeleteCookie( name, path, domain ) {
if ( GetCookie( name ) ) {
document.cookie = name + "=" +
( ( path ) ? "; path=" + path : "" ) +
( ( domain ) ? "; domain=" + domain : "" ) +
"; expires=Thu, 01-Jan-70 00:00:01 GMT";
}
}
function SetCookie( name, value, expires, path, domain, secure ) {
document.cookie = name + "=" + escape (value) +
( ( expires ) ? "; expires=" + expires.toGMTString() : "" ) +
( ( path ) ? "; path=" + path : "" ) +
( ( domain ) ? "; domain=" + domain : "" ) +
( ( secure ) ? "; secure" : "" );
}
/**
* Helper function for GetCookie()
*/
function getCookieVal( offset ) {
var endstr = document.cookie.indexOf ( ";", offset );
if ( endstr == -1 ) endstr = document.cookie.length;
return unescape( document.cookie.substring( offset, endstr ) );
}