custom script for wordpress website

Hi, I need a freelancer to write a script that will be compatible with wordpress. I should be able to add this script to a page on my wordpress website and the script should do the following: - when the user opens the page, the script should be automatically activated - the script will automatically post a notification on the user's facebook wall and would say somthing like "just read xxxx" where xxxx is the name of the article title you must explain how you will complete this job and you must also make a sample to demonstrate that you understand the requirements lowest bids will get priority