var imgs = new Image ();

var imghi001 = new Image ();
imghi001.src = "../images/m-01-ov.gif";
var imghi002 = new Image ();
imghi002.src = "../images/m-02-ov.gif";
var imghi003 = new Image ();
imghi003.src = "../images/m-03-ov.gif";
var imghi004 = new Image ();
imghi004.src = "../images/m-04-ov.gif";
var imghi005 = new Image ();
imghi005.src = "../images/m-05-ov.gif";
var imghi006 = new Image ();
imghi006.src = "../images/m-06-ov.gif";

var imghi001a = new Image ();
imghi001a.src = "../images/m-01a-ov.gif";
var imghi001b = new Image ();
imghi001b.src = "../images/m-01b-ov.gif";
var imghi001ca = new Image ();
imghi001ca.src = "../images/m-01ca-ov.gif";
var imghi001c = new Image ();
imghi001c.src = "../images/m-01c-ov.gif";
var imghi001d = new Image ();
imghi001d.src = "../images/m-01d-ov.gif";
var imghi001e = new Image ();
imghi001e.src = "../images/m-01e-ov.gif";
var imghi001f = new Image ();
imghi001f.src = "../images/m-01f-ov.gif";
var imghi002a = new Image ();
imghi002a.src = "../images/m-02a-ov.gif";
var imghi002b = new Image ();
imghi002b.src = "../images/m-02b-ov.gif";
var imghi002c = new Image ();
imghi002c.src = "../images/m-02c-ov.gif";
var imghi003a = new Image ();
imghi003a.src = "../images/m-03a-ov.gif";
var imghi004a = new Image ();
imghi004a.src = "../images/m-04a-ov.gif";

function imghi(imgnr)
{
var imgname = "img"+imgnr;
var imghiname = "imghi"+imgnr;

imgs.src = document[imgname].src;
document[imgname].src = eval (imghiname).src;
return true;
}

function imgno(imgnr)
{
var imgname = "img"+imgnr;
document[imgname].src = imgs.src;
 return true;
}