Abstract: The present application relates to a computer having a processor configured to execute a set of instructions to render a customized version of a document object model with part of the content rendered being User Interface elements. A scripted UI element in a document object model is identified and at least one rule associated with the UI elements is accessed. The at least one rule is applied to the scripted UI element to generate a modified document object model which is then rendered server-side. The present application relates to server-side rendering techniques in Web content delivery; content filtering based on user-specific and context-based requirements; and efficiency techniques.