Use Jquery
save your bookmark inside the following event. Then check the bookmark at login page and redirect to the saved bookmark page.
$( document ).ready()
A page can't be manipulated safely until the document is "ready." jQuery detects this state of readiness for you. Code included inside $( document ).ready() will only run once the page Document Object Model (DOM) is ready for JavaScript code to execute. Code included inside $( window ).load(function() { ... }) will run once the entire page (images or iframes), not just the DOM, is ready.
http://learn.jquery.com/using-jquery-core/document-ready/[
$( document ).ready()]