function readCookie(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;
}
               
function handle_user_partial() {
	var login_cookie = readCookie('login');
    
	document.getElementById('nav_user_login').firstChild.nodeValue=login_cookie;
  document.getElementById('nav_user_albums').href = '/picture/albumlist/?user=' + login_cookie;
  document.getElementById('nav_user_bookmarks').href = '/picture/user/' + login_cookie;
  document.getElementById('nav_user_tags').href = '/picture/tag/?user=' + login_cookie;
  document.getElementById('nav_user_comments').href = '/picture/user/' + login_cookie + '?show=comments';
  document.getElementById('nav_user_notes').href = '/picture/user/' + login_cookie + '?show=notes';
  document.getElementById('nav_user_votes').href = '/picture/user/' + login_cookie + '?show=votes';
  document.getElementById('nav_user_scrapbook').href = '/scrapbook/user/' + login_cookie;
}


function handle_cached_user() {
	var login_cookie = readCookie('login');
    var logged_in = document.getElementById('logged_in_user_nav_links');
    var logged_out = document.getElementById('logged_out_user_nav_links');
    if(login_cookie == null) {
      logged_in.style.display = 'none';
      logged_out.style.display = 'block';
    } else {
			handle_user_partial();
      logged_out.style.display = 'none';
      logged_in.style.display = 'block';
    }
}