need another pair of eyes

[Captain_404]

I've been working on a segment of code for the past few days now for a game, somethings wrong, but I can't tell what.

I have a line drawn between two mc's, and based on how the length of that line changes (it's rotated from mc2 to mc1), I want the distance between the two to change as well.

so...

mc2
|\
|..\c
|....\
|......\mc1

when "c" changes, mc1 should move accordingly.

What am I doing wrong?

	for (j; j<1; j++) {
	var a = mc1._y - foot2._y;
	var b = mc1._x - foot2._x;
	var c = Math.sqrt(a*a+b*b);
	}
	c = mc2._height;
	a = c*Math.sin(point);
	b = Math.sqrt(c*c-a*a);
	mc1._x = mc2._x+b;
	mc1._y = mc2._y+a;

-or-

can you tell me a better, entirely different way of doing this?