function shownav(h){
    for(var i=0;i<2;i++){
        var v=document.getElementById("txt_"+i);
        if(v!=null&&v!=undefined)
            v.className="txt0";
    }
    var v=document.getElementById("txt_"+h);
    if(v!=null&&v!=undefined)
        v.className="txt1";
}

function shownav2(h){
    for(var i=0;i<8;i++){
        var v=document.getElementById("phtxt_"+i);
        if(v!=null&&v!=undefined)
            v.className="phtxt0";
    }
    var v=document.getElementById("phtxt_"+h);
    if(v!=null&&v!=undefined)
        v.className="phtxt1";
}

function selectIndex(h)
{
    var v=document.getElementById("index_"+h);
     if(v){
        v.className="select";
    }
}