Flash 8 & CSS

Hi,
anyone know how I could add css formatting to the following function?
I just cant seem to get anything to work.

function setPlaylistwahl() {
playchoice.playliste = “”;
for (var j=1; j <= aPath.length; j++) {
playchoice.playliste += “<a href='asfunction:playchoice,”+j+"’>"+j+". <u>"+songTitel[(j-1)].substr(0,25)+"</u></a>"+songTime[(j-1)].substr(0,25)+"<br>";
}
}

thank you