function onEnterFrame() {
if (!ifDrag && Key.isDown(4)) {
ifDrag = true;
startDrag(tu_mc);
} else if (!Key.isDown(4)) {
tu_mc.stopDrag();
ifDrag = false;
}
}
var myListener:Object = new Object();
myListener.onMouseWheel = function(delta) {
tu_mc._width += delta*8;
tu_mc._height += delta*8;
};
Mouse.addListener(myListener);