Is it possible to set a minimum height for a DIV container?

Yes. You can create an InlineGraphicElement, and assign to it the width & height that you want to reserve for the MovieClip. When the MovieClip is available, just add it to the InlineGraphicElement. You can do this most easily by calling into the EditManager's insertInlineElement function. Pass it a null source, and a width & height. Then, once you have the MovieClip, you can assign the source by calling EditManager.modifyInlineElement function with the MovieClip as source. Alternatively, you can create and modify the inline by calling directly into the low level APIs to create the InlineGraphicElement and then manipulate it directly and update. If you have a uri for the MovieClip, and just want it to load, pass the uri as the source and TLF will take care of the loading for you.

- robin