if (document.images)
    {
    	01_off = new Image(); 01_off.src = "images/map_01_off.gif";
	b02on = new Image(); b02on.src = "images/map_01_off.gif";
	b03on = new Image(); b03on.src = "images/nav/03-o.jpg";
	b04on = new Image(); b04on.src = "images/nav/04-o.jpg";
	b05on = new Image(); b05on.src = "images/nav/05-o.jpg";
	b06on = new Image(); b06on.src = "images/nav/06-o.jpg";
	b07on = new Image(); b07on.src = "images/nav/07-o.jpg";
	e01on = new Image(); e01on.src = "images/oemail.jpg";

    b01off = new Image(); b01off.src = "images/map_01_over.gif";
	b02off = new Image(); b02off.src = "images/nav/02-n.jpg";
	b03off = new Image(); b03off.src = "images/nav/03-n.jpg";
	b04off = new Image(); b04off.src = "images/nav/04-n.jpg";
	b05off = new Image(); b05off.src = "images/nav/05-n.jpg";
	b06off = new Image(); b06off.src = "images/nav/06-n.jpg";
	b07off = new Image(); b07off.src = "images/nav/07-n.jpg";
	e01off = new Image(); e01off.src = "images/nemail.jpg";
    }

function imgOn(imgName)	{
    if (document.images)
    	{
        document[imgName].src = eval(imgName + "on.src");
        }
	}

function imgOff(imgName)
	{
    if (document.images){
        document[imgName].src = eval(imgName + "off.src");
}
}