if ( document.images )
{
    kelpon = new Image(); kelpon.src = "http://static.flickr.com/117/273642472_07eb4cd6f9.jpg?v=0";
    kelpoff = new Image(); kelpoff.src = "http://static.flickr.com/96/273642475_cd008ecd6c.jpg?v=0";
}

function kelpImageOver()
{
    if ( document.images )
        document.kelpImage.src=kelpon.src;
}

function kelpImageOut()
{
    if ( document.images )
        document.kelpImage.src=kelpoff.src;
}