Some useful JS tricks in Webdev

Hey all, here i want to share some small but useful browser side javascripts ticky codes..

1. Javascript to check when a static page was last modified:
                 javascript:document.write(document.lastModified);
2. These take you forward or back one page.
                 javascript: back();
                 javascript: forward();
3. Replace 'message here' with your message (Example: 'hi') or your expression.
                 javascript: alert('message here');