code so far
import flash.events.MouseEvent;

//first run
var mc_home:home = new home();
var mc_buildingLarge:buildingLarge = new buildingLarge();
var mc_buildingMed:buildingMed = new buildingMed();
var mc_buildingSmall:buildingSmall = new buildingSmall();
var mc_player:player = new player();
var mc_enemy:enemy = new enemy();
var mc_overlay:overlay = new overlay();
addChild(mc_home);
mc_home.x = 0;
mc_home.y = 0;
if (stage.stageWidth != 800 || stage.stageHeight != 480) {
trace(“device is not a defult resolition, attempting to resize”)
reSize();
}

//event listeners
$mc_home.btn_play.addEventListener(MouseEvent.CLICK, newGame);

//functions
function reSize():void{
$mc_home.width = stage.stageWidth;
$mc_home.height = stage.stageHeight;
}
function newGame(evt:MouseEvent):void {

}

will update when i have progress.