<!--
// code from 
// http://www.supportduweb.com/scripts_tutoriaux-code-source-32-changer-l-opacite-d-un-div-alpha-compatibles-avec-tous-les-navigateurs.html
//
function setOpacity(id, opacity)
{
    el = document.getElementById(id);
    el.style["filter"] = "alpha(opacity="+opacity+")";
    el.style["-moz-opacity"] = opacity/100;
    el.style["-khtml-opacity"] = opacity/100;
    el.style["opacity"] = opacity/100;
    return true;
}
//-->