Opentip

Opentip is an open-source JavaScript library for adding configurable tooltips to web interfaces. Tooltips can include small pointer stems and use multiple predefined or custom visual styles. Content can be supplied directly or loaded asynchronously through AJAX. The library automatically repositions tooltips when their original placement would move outside the browser viewport. Developers can activate tips through hover, clicks, form submission, or custom application events. CSS3 animations provide animated appearance and dismissal behavior. Opentip uses an adapter architecture that can work with native JavaScript as well as frameworks such as jQuery and Prototype.