var images = new Object;

function setImages(id, imgOver, imgOut) {
	var over = new Image, out = new Image;
	over.src = imgOver;
	out.src = imgOut;
	images[id] = [over,out];
}

function onOver(ob) {
	if (ob.id && images[ob.id]) {
		ob.src = images[ob.id][0].src;
	}
}

function onOut(ob) {
	if (ob.id && images[ob.id]) {
		ob.src = images[ob.id][1].src;
	}
}


setImages('k1', '/images/teploizol-over.gif', '/images/teploizol.gif');
setImages('k2', '/images/opalubka-over.gif', '/images/opalubka.gif');
setImages('k3', '/images/krovlya-over.gif', '/images/krovlya.gif');
setImages('k4', '/images/stroitelstvo-over.jpg', '/images/stroitelstvo.gif');