Tip of the Day - Java Script

I need a "tip of the day" script that other webmasters can put on their site, that offers a tip of the day that will be pulled from a designated RSS feed. Under the tip of the day there will also be a text link that will link back to my site. I need to be able to switch to different RSS feeds and change the anchor text of the link back to my site. This is so I can get additional links back to my site by offering different tips to different niches. If you know javascript then this should be a simple script modification. This project must be done soon.