function gotoyear(year) {

 parent["history"].location.href = "history.html#" + year;
}

function selectyear(year) {
 i = document.getElementById(year);
 i.src = "pics_jahre/" + year + "_hov.png";
}

function deselectyear(year) {
 i = document.getElementById(year);
 i.src = "pics_jahre/" + year + "_nrm.png";
}