ActionScript 3.0 :: Access Global Object With Another One Of Different Class

I have 2 classes:
bullet class:Extends MovieClip and stores information about bullets while handling their movement and properties. enemy class:Extends MovieClip and simply so far stores the x,y co-ordonates of the enemy. I want the bullet to home onto the enemy object in the movement function by referencing the x and y position of the enemy.

Here's the code:
//Main as3 file
stage.addEventListener(MouseEvent.MOUSE_DOWN,clk);//stuff that happens on click
function clk (e:MouseEvent){
shotcnt += 1;
shotobj.push(new pshot(player.x,player.y));
addChild(shotobj[shotcnt]);
[Code] .....