function preload(img)
{
  var a=new Image(); a.src=img; return a;
}
Up   = preload('/images/indiup.gif');
Down = preload('/images/indidw.gif');

function hover(imgID)
{
   document["i" + imgID].src = Down.src;
}

function unhover(imgID)
{
   document["i" + imgID].src = Up.src;
}

function hoverName(name)
{
   document[name].src = "/images/" + name + "dw.gif";
}

function unhoverName(name)
{
   document[name].src = "/images/" + name + "up.gif";
}