
Positioning of HTML Content
Positioning an HTML block in a web document is known as a layer. A layer can be created in two ways :
- Javascript positioning
- CSS positioning
Javascript creates a layer object for each layer that is defined. Using the layer object you can write Javascript code to move, hide, expand, contract, and change the overlapping sequence of layers. Even new layers and the content of existing layers can be changed dynamically. Dynamic animations and self-modifying pages are also possible.



