function initSubnav(){
    var subnav = document.getElementById('subnav');
    var navas = subnav.getElementsByTagName('a');
    for (var a=0; a<navas.length; a++){
        var currenthref=String(navas[a].href);
        var currentloc=String(document.location);
        if (unescape(currenthref)==unescape(currentloc)){
            navas[a].className="current";
        }
    }
}

function initialize(){
    if ( document.getElementById ){
       	if (document.getElementById("subnav")) initSubnav();
    }
}

window.onload=initialize;