1. A method performed by a computer comprising: referencing one or more multimedia objects through a first set of one or more elements in a content document; associating, in a timing document that is separate from the content document, the first set of one or more elements with a second set of one or more elements in the timing document by referencing at least a portion of the first set of one or more elements to one or more elements in the second set of one or more elements; arranging the second set of one or more elements in the timing document to indicate timing for the multimedia objects referenced by the first set of one or more elements; receiving an input to initiate an event affecting an element in the first set of one or more elements in the content document; providing a proxy element in the second set of elements in the timing document that is configured to reference application of the event; and rendering the multimedia objects based on the arranging of the second set of one or more elements.
1. A method performed by a computer comprising: referencing one or more multimedia objects through a first set of one or more elements in a content document; associating, in a timing document that is separate from the content document, the first set of one or more elements with a second set of one or more elements in the timing document by referencing at least a portion of the first set of one or more elements to one or more elements in the second set of one or more elements; arranging the second set of one or more elements in the timing document to indicate timing for the multimedia objects referenced by the first set of one or more elements; receiving an input to initiate an event affecting an element in the first set of one or more elements in the content document; providing a proxy element in the second set of elements in the timing document that is configured to reference application of the event; and rendering the multimedia objects based on the arranging of the second set of one or more elements. 3. The method of claim 1 wherein the arranging is performed through a time container that defines the second set of one or more elements.