var PopUpWindow=null;
function popUp(mypage,myname,w,h){
LeftPosition=(screen.width)?(screen.width-w)/2:100;
TopPosition=(screen.height)?(screen.height-h)/2:100;
settings='width='+ w + ',height='+ h + ',top=' + TopPosition + ',left=' + LeftPosition + ',location=no,directories=no,menubar=no,toolbar=no,status=no,scrollbars=no,resizable=no,dependent=no';
PopUpWindow=window.open(mypage,myname,settings);
}

function dmenu(id) {
if (
document.getElementById("art"+id).style.display=="block" ||
document.getElementById("art"+id).style.display=="")
document.getElementById("art"+id).style.display="none";
else if (
document.getElementById("art"+id).style.display=="none")
document.getElementById("art"+id).style.display="block";
}