function avaaVuosi() {
    var tbl = document.getElementById('tiedotteet');
    if (!tbl) return(0);
    var trows = tbl.getElementsByTagName('tr');
    var vv = this.getAttribute("data-year");
    for (var i=0; i < trows.length; i++) {
        if (trows[i].getAttribute("data-year")){
            if (trows[i].getAttribute("data-year") == vv) {
                trows[i].className = 'visiblerow';
            } else {
                trows[i].className = 'hiddenrow';
            }
        }
    }
    return(0);
}
function naytaVuodet() {
    var tbl = document.getElementById('tiedotteet');
    if (!tbl) return(0);
    var trows = tbl.getElementsByTagName('tr');
    var vv = "x";
    var tdy = "";
    var yrow = new Array();
    var yrowtd = new Array();
    var ypara = new Array();
    var ydata = new Array();
    var j=0;
    var refel;
    for (var i = 0; i < trows.length; i++) {
        if (trows[i].attributes){
            tdy = trows[i].getAttribute("data-year");
            if (tdy != vv) {
                ydata[j] = document.createTextNode("Tiedotteet " + tdy);
                ypara[j] = document.createElement("p");
                ypara[j].setAttribute("data-year", tdy);
                ypara[j].className = "tiedoteOtsikko";
                ypara[j].onclick = avaaVuosi;
                ypara[j].appendChild(ydata[j]);
				
                yrowtd[j] = document.createElement("td")
                yrowtd[j].setAttribute("colSpan", "3");
                yrowtd[j].appendChild(ypara[j]);
                yrow[j] = document.createElement("tr");
                yrow[j].setAttribute("width", "100%");
                yrow[j].className = "tiedoteOtsikkoRivi";
                yrow[j].appendChild(yrowtd[j]);
				
                refel = trows[i];
                refel.parentNode.insertBefore(yrow[j], refel);
                j++;
                vv = tdy;
            }
        }
    }
    if (ypara[0]) { ypara[0].onclick(); }
}