How can i improve website loading of pages- feedback please

Hi i have created a flash website, however pages seem to take a bit of time appearing can someone give me advice on how to improve this or create decent transitions between the pages. All the pages are external swf.s that are loaded into blank movie clips, this is the script i use to call on new pages from nav bar

on(press) {
_root.createEmptyMovieClip(“plans_holder”, 2);
_root.plans_holder._x = 0;
_root.plans_holder._y = 170;

this is how all the other pages are loaded including nav bar aswell, as u can see the pages take a fair few deconds before they appear can i make this quicker? the site is here