a.header_nav:link {font-size: 12px;font-family: Arial, Helvetica, sans-serif;color: #ffffff;text-decoration: none;font-weight:bold;}
a.header_nav:visited {font-size: 12px;font-family: Arial, Helvetica, sans-serif;color: #ffffff;text-decoration: none;font-weight:bold;}
a.header_nav:hover {font-size: 12px;font-family: Arial, Helvetica, sans-serif;color: #FFFF00;text-decoration: underline;font-weight:bold;}
a.header_nav:active {font-size: 12px;font-family: Arial, Helvetica, sans-serif;color: #ffffff;text-decoration: none;font-weight:bold;}