Need floating bar that supports javascript

Need a floating social network bar that can be displayed on any of my web sites. Here is what it needs to do: 1. Show properly in IE, Firefox, Chrome and Opera browsers. 2. Must work inside html or php pages static and dynamic. 3. Should be floating always on the right side of the page. 4. Should display Facebook likes button. 5. Must support additional Javascript scripts insertions (like google analytics, rating systems, etc) without breaking the code. 6. Css design to change width, length and colors. 7. The bar should know the current URL - this is needed for stats and rating tracking in order to show correct data for individual pages.