Useage of delete <function name>

[shellbryson]

I’m using delete to remove a function, but I’m wondering how clean it is? Is it likely to cause issues if I have the following:

up_btn.onRollOver = function() {
    blog_mc.onEnterFrame = function() {
        this._y +=10;
    }
}

up_btn.onRollOut = function() {
    delete blog_mc.onEnterFrame;

}

It works fine, but the rapid creation and deletion of functions makes me… twitchy