scriptaculous
script.aculo.us is an open-source JavaScript framework
scriptaculous is an open-source JavaScript framework for visual effects and interface behaviors in classic Ajax-era web applications. It builds on the Prototype JavaScript library and adds higher-level tools for animation, drag-and-drop behavior, controls, sliders, and interface enhancements. The project was created for websites that wanted richer user interaction before modern frontend frameworks became common. Developers could include Prototype and the script.aculo.us files, then use the...