How to removeChild? Pleasee

I have this code for a multi gallery. I need to remove the child where the swf loads.
Help me!!

the code

function newvid(event:MouseEvent) {
trace(“you clicked me1”);
var loadit = new Loader();
addChild(loadit);
loadit.load(new URLRequest(“image_gallery_animated.swf”));
}
boton1.addEventListener(MouseEvent.MOUSE_DOWN, newvid);
function newvid2(event:MouseEvent) {
trace(“you clicked me2”);
var loadit2 = new Loader();
addChild(loadit2);
loadit2.load(new URLRequest(“image_gallery_animated2.swf”));
}
boton2.addEventListener(MouseEvent.MOUSE_DOWN, newvid2);

function newvid3(event:MouseEvent) {
trace(“you clicked me3”);
var loadit3 = new Loader();
addChild(loadit3);
loadit3.load(new URLRequest(“image_gallery_animated3.swf”));
}
boton3.addEventListener(MouseEvent.MOUSE_DOWN, newvid3);


Thanx