// JavaScript Document

document.onkeydown = NavigateThrough;

function NavigateThrough (event)

    {

    if (!document.getElementById) return;

    if (window.event) event = window.event;

        if (event.ctrlKey)

            {

               var link = null;

               var href = null;

               switch (event.keyCode ? event.keyCode : event.which ? event.which : null)

                   {

                       case 0x25:

                               link = document.getElementById ('PrevLink');

                               break;

                       case 0x27:

                               link = document.getElementById ('NextLink');

                   }

        if (link) document.location = link.href;

            }

    }