document.onmouseover = hidestatus;
document.onclick = hidestatus;
document.onmouseout = hidestatus;

function hidestatus() {
    window.status = 'OnNet21';
    return true;
}

function click() {
    //alert(event.keyCode);

    if ((event.button == 2) || (event.button == 3)) {
        //alert('not use mouse right button.');
        event.cancelBubble = true;
        event.returnValue = false;
        return false;
    }
}

function clickKey() {
    //         alert('not use mouse button.');
    event.keyCode = 0;
    return false;
}

function contextmenu() {
    // Only IE
    event.cancelBubble = true;
    event.returnValue = false;
    return false;
}

document.onmousedown = click;
//document.onkeydown=clickKey;
document.oncontextmenu = contextmenu;