Make an HTML table that corresponds to the WebToon storyboard. Place the HTML code for one imagemap within each table cell. When you are at the end of the Toon, close the table. This is being written in 1998. I think that the current average user's bandwidth calls for quiet, static, flat WebToon images.
Plain images are neither too much nor too little to download.
Animation is a cornerstone of modern cartoons. For the time being, quiet, static, flat WebToon images get the job done. Make a storyboard summarizing your document. Create digital images of people talking. Copy, save, pick, crop the images.