var pick = false;
age= new Image();
age.src = "images/tab-age.jpg";
agepick= new Image();
agepick.src = "images/over-age.jpg";
dis= new Image();
dis.src = "images/tab-dis.jpg";
dispick= new Image();
dispick.src = "images/over-dis.jpg";
vets= new Image();
vets.src = "images/tab-vets.jpg";
vetspick= new Image();
vetspick.src = "images/over-vets.jpg";
beh= new Image();
beh.src = "images/tab-beh.jpg";
behpick= new Image();
behpick.src = "images/over-beh.jpg";
empl= new Image();
empl.src = "images/tab-empl.jpg";
emplpick= new Image();
emplpick.src = "images/over-empl.jpg";
juv= new Image();
juv.src = "images/tab-juv.jpg";
juvpick= new Image();
juvpick.src = "images/over-juv.jpg";
libsvcs= new Image();
libsvcs.src = "images/tab-libsvcs.jpg";
libsvcspick= new Image();
libsvcspick.src = "images/over-libsvcs.jpg";
libit= new Image();
libit.src = "images/tab-libit.jpg";
libitpick= new Image();
libitpick.src = "images/over-libit.jpg";
ota= new Image();
ota.src = "images/tab-ota.jpg";
otapick= new Image();
otapick.src = "images/over-ota.jpg";
youth= new Image();
youth.src = "images/tab-youth.jpg";
youthpick= new Image();
youthpick.src = "images/over-youth.jpg";
function on3(name)     {
         document[name].src = eval(name + "pick.src");
}
function off3(name)    {
         document[name].src = eval(name + ".src");
}
pick = true;
function on(name)     {
         if (pick) on3(name);
}
function off(name)    {
         if (pick) off3(name);
}