function t_date(){
    var d=new Date();
    document.write(d.toLocaleString());
}
function toggleLayer( whichLayer ){
    var elem, vis;
    if( document.getElementById ) // this is the way the standards work
        elem = document.getElementById( whichLayer );
    else if( document.all ) // this is the way old msie versions work
        elem = document.all[whichLayer];
    else if( document.layers ) // this is the way nn4 works
        elem = document.layers[whichLayer];
    vis = elem.style;
    vis.display = (vis.display==''||vis.display=='block')?'none':'block';
}