AnimTrap is a CSS Framework for animations. Its like bootstrap for JS animations. All you need is to import AnimTrap and use it for animations in your webapp easily. AnimTrap supports animations like scrolling and simple effects which would make a richer the experience from your webapp
By looking at the code it can be guessed that unlimited amount of div elements will be created and after the usage they are not been destroyed. It can lead to memory errors of the user computer.
Its obvious that this plugin is not binding to jQuery itself.
We need let users to select what element should display the rain, so i suggest to refactor this to be used as like