No there is none as Yahoo.com is not a script. It is a collection of lots of scripts and lots of technologies used in it. You can try to make one with Yahoo GUI library though.
Hi, Here is a script I'm in the process of writing. It's not finished nor does it have all the features yet but you can take a look at my current progress. www.suppyo.com To log in as a user, you can use: user - joe pass - test Admin: www.suppyo.com/admin/admin_menu.php user - webmaster pass - 4tugboat Let me know if you have any questions, Tim