What do you mean by a series of movies? Is it a limited number of movies? Do you have control of the FLAs? Do you need the code to embed an swf in an HTML page? If you have the FLA files then you can set the commands within flash to replace a swf embedded within an HTML page with another swf.....the page does not need to be reloaded, javascript is not necessary, this can all be done within flash...unless of course you have a large number of movies without control of the source files.