sn1off = new Image(141, 23);
sn1off.src = "images/subnav_overview_off.gif";
sn2off = new Image(141, 23);
sn2off.src = "images/subnav_ship_off.gif";
sn3off = new Image(141, 23);
sn3off.src = "images/subnav_pricing_off.gif";
sn4off = new Image(141, 22);
sn4off.src = "images/subnav_addons_off.gif";
sn6off = new Image(135, 28);
sn6off.src = "images/subnav_tellafriend_off.gif";
sn7off = new Image(135, 21);
sn7off.src = "images/subnav_printvacation_off.gif";
adoff = new Image(250, 81);
adoff.src = "images/cruises_worryfree_off.gif";

sn1on = new Image(141, 23);
sn1on.src = "images/subnav_overview_on.gif";
sn2on = new Image(141, 23);
sn2on.src = "images/subnav_ship_on.gif";
sn3on = new Image(141, 23);
sn3on.src = "images/subnav_pricing_on.gif";
sn4on = new Image(141, 22);
sn4on.src = "images/subnav_addons_on.gif";
sn6on = new Image(135, 28);
sn6on.src = "images/subnav_tellafriend_on.gif";
sn7on = new Image(135, 21);
sn7on.src = "images/subnav_printvacation_on.gif";
adon = new Image(250, 81);
adon.src = "images/cruises_worryfree_on.gif";