var rings = new Image();
rings.src="img/nav/rings_1.jpg";

var ringsoff = new Image();
ringsoff.src="img/nav/rings.jpg";

var earings = new Image();
earings.src="img/nav/earings_1.jpg";

var earingsoff = new Image();
earingsoff.src="img/nav/earings.jpg";

var pendants = new Image();
pendants.src="img/nav/pendants_1.jpg";

var pendantsoff = new Image();
pendantsoff.src="img/nav/pendants.jpg";

var bridal = new Image();
bridal.src="img/nav/bridal_1.jpg";

var bridaloff = new Image();
bridaloff.src="img/nav/bridal.jpg";

var child = new Image();
child.src="img/nav/child_1.jpg";

var childoff = new Image();
childoff.src="img/nav/child.jpg";

var special_gifts = new Image();
special_gifts.src="img/nav/special_gifts_1.jpg";

var special_giftsoff = new Image();
special_giftsoff.src="img/nav/special_gifts.jpg";

function on(imgname, action)
{
if(action)
  {
   eval ('document.'+imgname+'.src = '+imgname+'.src')
   }
else eval ('document.'+imgname+'.src = '+imgname+'off.src');
}