"onEnterFrame"

hi all!

if i delete the “onEnterFrame” with this code:

myClip.onEnterFrame=function()
{
____if (this._x<300) this._x+=5;
____else delete this.onEnterFrame;
____// to erase it, but you can simply empty it
____// else this.onEnterFrame=null;
}

how can i turn it on again??

thanks!
sime;