Check any website when is it lastly updated???

Hi Guys!!!!!It is very needed that when the website is updated that means whether a new post or any updated content,U can check though this small javascript hack!!! Try this ,its very cool :-)
 

                                      

Steps :-

1.) Open your favorite website eg: http://akshaykitswgl.com,  facebook.com ,  google.com etc

2.) Go to address bar where you have to type the URL (website link)

3.) Copy & paste this java script code

4.) javascript:alert(document.lastModified);

5.) You can get a Popout MessageBox with last modified date and time

6.) Done

                                                thanks for viewing......

                                                                        Akshay