P {text-align: justify} 
H2 {text-align: center; color: white; background: darkblue}
H3 {color: yellow; font-family: Arial; font-family: "Times New Roman"}
H4 {text-align: center; color: white; background: darkblue; font-size: 120%}
BODY { 
   background-image: url(http://www.ed.ac.uk/~jeanb/dna.gif);
font-family: Verdana, Arial, sans-serif;
}

A:link 	{
   text-decoration : underline;
font-weight : bold;
   color : darkblue;
   }

A:visited {
   text-decoration: underline;
		font-weight : bold;
   color: darkgreen;
}

A:hover {
font-weight: bold;
text-decoration: underline;   
color: #CC3300;
}


a:visited.graphics {
	border: #000099;
	text-decoration: none;
	color:  #000099;
}

a:link.graphics {
	border: none;
	text-decoration: none;
	color:  #000099;
}

A:hover.graphics {
font-weight: bold;
text-decoration: underline;   

}