//load images
var but_about_a = new Image;
var but_about_b = new Image;
var but_cd_a = new Image;
var but_cd_b = new Image;
var but_archive_a = new Image;
var but_archive_b = new Image;
var but_links_a = new Image;
var but_links_b = new Image;
var but_contact_a = new Image;
var but_contact_b = new Image;
var but_name_a = new Image;
var but_name_b = new Image;

but_name_a.src = "/images/hdr-name.gif";
but_name_b.src = "/images/hdr-name_f2.gif";
but_about_a.src = "/images/hdr-about.gif";
but_about_b.src = "/images/hdr-about_f2.gif";
but_cd_a.src = "/images/hdr-cd.gif";
but_cd_b.src = "/images/hdr-cd_f2.gif";
but_archive_a.src = "/images/hdr-archive.gif";
but_archive_b.src = "/images/hdr-archive_f2.gif";
but_links_a.src = "/images/hdr-links.gif";
but_links_b.src = "/images/hdr-links_f2.gif";
but_contact_a.src = "/images/hdr-contact.gif";
but_contact_b.src = "/images/hdr-contact_f2.gif";