Topic: My External buttons are not working

var mcl3:MovieClipLoader = new MovieClipLoader();
var mclL3:Object = new Object();

mclL3.onLoadProgress = function(target,loaded,total) {
	centerLoader.percent3.text = Math.round((loaded/total) * 100) + "%";
}

mclL3.onLoadInit = function() {
	centerLoader._visible = false;
	centerLoader.percent3.text = "";
}

mcl3.addListener(mclL3);

_root.currMovie = "news";
mcl3.loadClip(_root.currMovie+".swf",centerHolder);

var mcl4:MovieClipLoader = new MovieClipLoader();
var mclL4:Object = new Object();

mclL4.onLoadProgress = function(target,loaded,total) {
	_root.centerLoader.percent3.text = Math.round((loaded/total) * 100) + "%";
}

mclL4.onLoadInit = function() {
	_root.centerLoader._visible = false;
	_root.centerLoader.percent3.text = "";
}

mcl4.addListener(mclL4);

menuOT.b1.buttonText.buttonText.text = "PRODUCTS";
menuOT.b1.onRelease = function() {
	if (_root.currMovie == undefined || _root.currMovie != "products") {
		_root.currMovie = "products";
		_root.mcl4.loadClip("products.swf",topHolder);
		_root.mcl3.unloadClip("news.swf",centerHolder);
	}
}