Where to set JPG quality when dynmic loading JPG's?

Hi,

I am dynamic loading some JPG fotos from photo directory/map, each in an empty container. And i was wondering how i set the qualtiy of the jpg. Or should i just save each jpg file with the best quality/size ratio in the directory/map.

In a static movie i normally have the jpg in my flash library and i usally use the compression of flash. Somehow this makes my .swf smaller.

Any suggestions