Problem Using Css ?

Hello guys,well I'm using Css to format some dynamic text but I don't understand something.... If I try to format a text with a Css class, I've no problem.... but if I want to format a link it doesn't work.So my question is : Is it possible to do a class for my links? like :a.link1....}a.link1:hover{....}etc for link2
Code:
//my code in Css : a.link1:link {color: #990000;}a.link1:hover {color: #FFFFFF;}//in flash :function style(mc){mc.html = true;mc.embedFonts = true;mc.styleSheet = styleCss;}styleCss = new TextField.StyleSheet();styleCss.load("liensStyle.css");styleCss.onLoad = function(ok){if(ok){style(liens1)style(liens2)liens1.htmlText = "<a href='#' class ='link1'>liens1</a>";liens2.htmlText = "<a href='#' class ='link1'>liens2</a>";}}
thanks a lot...