about_off = new Image();
about_off.src = "images/m1_pic.gif";
about_ovr = new Image();
about_ovr.src = "images/m1_opic.gif";

head_off = new Image();
head_off.src = "images/m2_pic.gif";
head_ovr = new Image();
head_ovr.src = "images/m2_opic.gif";

rep_off = new Image();
rep_off.src = "images/m3_pic.gif";
rep_ovr = new Image();
rep_ovr.src = "images/m3_opic.gif";

gal_off = new Image();
gal_off.src = "images/m4_pic.gif";
gal_ovr = new Image();
gal_ovr.src = "images/m4_opic.gif";

history_off = new Image();
history_off.src = "images/m5_pic.gif";
history_ovr = new Image();
history_ovr.src = "images/m5_opic.gif";

contact_off = new Image();
contact_off.src = "images/m6_pic.gif";
contact_ovr = new Image();
contact_ovr.src = "images/m6_opic.gif";


function on(img)
{
var imgovr = eval(img + "_ovr.src");
document[img].src = imgovr;
}


function off(img)
{
var imgoff = eval(img + "_off.src");
document[img].src = imgoff;
}