Help please!

Hello…fairly new to this so sorry if this seems a little basic…

I have a menu that pops out when you put the mouse over the a point on the movie. The following is the code…

onClipEvent (enterFrame) {
	if (_root._xmouse>_root.x01 and _root._xmouse<_root.x02 and _root._ymouse>_root.y01 and _root._ymouse<_root.y02) {
		tellTarget ("_root.menu") {
			gotoAndStop(2);
			_root.x02 = 670;
			_root.y01 = 180;
		}
	} else {
		tellTarget ("_root.menu") {
			gotoAndStop(3);
			_root.x02 = 590;
			_root.y01 = 560;
		}
	}
}

I want to change the area that the roll over is in one part of the movie. I’m guessing that I change the numbers but I’m not sure how to read it properly and change it.

Could anyone please help? It would be much appreciated!