var home_out = new Image(57, 20);
home_out.src = "graphics/home_out.gif";

var home_over = new Image(57, 20);
home_over.src = "graphics/home_over.gif";

var program_out = new Image(86, 20);
program_out.src = "graphics/program_out.gif";

var program_over = new Image(86, 20);
program_over.src = "graphics/program_over.gif";

var store_out = new Image(61, 20);
store_out.src = "graphics/store_out.gif";

var store_over = new Image(61, 20);
store_over.src = "graphics/store_over.gif";

var links_out = new Image(57, 20);
links_out.src = "graphics/links_out.gif";

var links_over = new Image(57, 20);
links_over.src = "graphics/links_over.gif";

var contact_out = new Image(88, 20);
contact_out.src = "graphics/contact_out.gif";

var contact_over = new Image(88, 20);
contact_over.src = "graphics/contact_over.gif";

var archive_out = new Image(82, 20);
archive_out.src = "graphics/archive_out.gif";

var archive_over = new Image(82, 20);
archive_over.src = "graphics/archive_over.gif";

function swapImg(img, id)
{
  document.getElementById(id).src = img.src;
}