A method and apparatus are disclosed for combining server-supplied user interface elements with client-supplied user interface elements. The server-supplied user interface elements can be received by a client device and inserted into a client-supplied object model, such as a Document Object Model (DOM). The object model can then be used to render a page, such as a webpage. By injecting server-supplied user interface elements into a client object model, the client can intelligently combine UI elements from a server with UI elements from a client. In the situation where there are conflicting or overlapping UI elements, the client device can modify the object model to eliminate such conflicts or overlaps.