button to load only a few frames within the timeline

I am new to AS3 and was doing a little bit of research before diving in.

I wish I could just create external swfs to load with each button, but the CMS system that I am uploading to won't allow it~

so I HAVE to make the thing into one swf, but the file size is too large.

Is it possible to make a button that loads only a few frames within the timelime? and the next button will load another few?

this is what i found and it says i can't:

http://stackoverflow.com/questions/791422/how-to-stop-flash-file-swf-from-loading-actionscript-3