var imagenames=new Array( 'home' , 'aboutme' , 'projects' , 'research' ,  'photos' , 'webcam', 'contact');
images=new Array();

if (document.images) {
    for(n = 0; n < imagenames.length; n++) {
        images[n]=new Image();
        images[n].src='/images/'+ imagenames[n] + '2.gif';
    }
}


function on(name) {
    eval('document.images.' + name + '.src="/images/' + name + '2.gif"');
}
function off(name) {
    eval('document.images.' + name + '.src="/images/' + name + '.gif"');
}