A{text-decoration:none;color:#990000;}
A:Visited{color:#990000;}
A:Active{color:#990000;}
A:Hover{color:#FF0000;}

A.bt_01{text-decoration:none;color:#FF0000;} 
A.bt_01:visited {color:#FF0000;} 
A.bt_01:active {color:#33CC00;}
A.bt_01:hover {color:#33CC00;}