a {text-decoration:none; color:black}
a:hover {font-weight: bold}
a.A1:hover {color:orange}
a.A2:hover {color:red}
a.A3:hover {color:skyblue}
a.A4:hover {color:green}
a.PIII { text-decoration: none; color: rgb(0,0,255) }
a.PIII:hover { color: rgb(255,0,0) }