function img_act(imgName) 
{
 imgOn = eval(imgName + 'n.src');
 document[imgName].src = imgOn;

}


 function img_inact(imgName) 
{ 
  document[imgName].src = eval(imgName + 'f.src'); 

}



h1n = new Image(80,80);
h1n.src = 'homeon.jpg';

h1f = new Image(80,80);
h1f.src = 'homeoff.jpg';

h2n = new Image(80,80);
h2n.src = 'home.jpg';

h2f = new Image(80,80);
h2f.src = 'blues.jpg';


c1n = new Image(80,80);
c1n.src = 'contacton.jpg';

c1f = new Image(80,80);
c1f.src = 'contactoff.jpg';

c2n = new Image(80,80);
c2n.src = 'contact.jpg';

c2f = new Image(80,80);
c2f.src = 'blues.jpg';


d1n = new Image(80,80);
d1n.src = 'courseon.jpg';

d1f = new Image(80,80);
d1f.src = 'courseoff.jpg';

d2n = new Image(80,80);
d2n.src = 'course.jpg';

d2f = new Image(80,80);
d2f.src = 'blues.jpg';


r1n = new Image(80,80);
r1n.src = 'registrationon.jpg';

r1f = new Image(80,80);
r1f.src = 'registrationoff.jpg';

r2n = new Image(80,80);
r2n.src = 'registration.jpg';

r2f = new Image(80,80);
r2f.src = 'blues.jpg';


l1n = new Image(80,80);
l1n.src = 'literacyon.jpg';

l1f = new Image(80,80);
l1f.src = 'literacyoff.jpg';

l2n = new Image(80,80);
l2n.src = 'literacy.jpg';

l2f = new Image(80,80);
l2f.src = 'blues.jpg';


k1n = new Image(80,80);
k1n.src = 'linkson.jpg';

k1f = new Image(80,80);
k1f.src = 'linksoff.jpg';

k2n = new Image(80,80);
k2n.src = 'links.jpg';

k2f = new Image(80,80);
k2f.src = 'blues.jpg';