CSS a:link examples...

links.css

/*
** 
** Notice: Links must follow this order:
**         
**         a (a:link)
**         a:visited
**         a:visited:hover
**         a:focus
**         a:focus:hover
**         a:hover
**         a:active
**         
**   Note: If you are already targeting "a", "a:link" becomes superfluous.
** 
*/

/* Set font-size and family on the body tag: */
body { font: 13px/1.231 arial, helvetica, clean, sans-serif; } /* YUI style... */

/* ... stuff here ... */

/* Here, the "a" inherits the font-size and family set via body tag above: */
a {
	color: #c00;
	text-decoration: none;
}
a:visited { color: #c00; }
a:visited:hover,
a:focus,
a:focus:hover,
a:hover,
a:active {
	color: #f00;
	text-decoration: underline;
}

/* This would apply specifically to an element with the class of "nav" with "a" as children: */
.nav a {}
.nav a:visited {}
.nav a:visited:hover,
.nav a:focus,
.nav a:focus:hover,
.nav a:hover,
.nav a:active {}