How do i stop the earth quake!

1

So here is a link to a site I am designing http://www.d-decks.com/new_interface3.html
You will see on the home page I made a scrooling lanscape and when it gets to the end it does an earthquake shake that is making people nauseous and vomit.
cool zelda!:link:

here is my script.

_root.homes.onMouseMove = function() {
constrainedMove(homes, 4, 1);
};
function constrainedMove(target:MovieClip, speed:Number, dir:Number) {
var mousePercent:Number = _xmouse/Stage.width;
var mSpeed:Number;
if (dir == 2) {
mSpeed = 1-mousePercent;
} else {
mSpeed = mousePercent;
}
target.destX = Math.round(-((target._width-Stage.width)mSpeed));
target.onEnterFrame = function() {
if (target._x == target.destX) {
delete target.onEnterFrame;
} else if (target._x>target.destX) {
target._x -= Math.ceil((target._x-target.destX)(speed/100));
} else if (target._x<target.destX) {
target._x += Math.ceil((target.destX-target._x)*(speed/100));
}
};
}