function clickIE4()
    {
        if (event.button==2)
        {
            //alert(message);
            return false;
        }
    }

    function clickNS4(e)
    {
        if (document.layers||document.getElementById&&!document.all)
        {
            if (e.which==2||e.which==3)
            {
            //alert(message);
            return false;
            }
        }
    }

    if (document.layers)
    {
        document.captureEvents(Event.MOUSEDOWN);
        document.onmousedown=clickNS4;
    }
    else if (document.all&&!document.getElementById)
    {
        document.onmousedown=clickIE4;
    }

    document.oncontextmenu=new Function("return false;")