a:link{text-decoration:none;}
/* unvisited link */
a:link{color: yellow;}
a:visited{text-decoration:none;}
/* visited link */
a:visited{color:yellow;}
a:hover{text-decoration:underline;}
/* mouse over link */
a:hover{color: red;}
a:active{text-decoration:underline;}
/* selected link */
a:active{color: blue;}