function click(mouse) {
    if (document.all) {
    if (event.button==2||event.button==3) {
        return false;
        }
    }
    if (document.layers) {
        window.captureEvents(Event.MOUSEDOWN);
        window.onmousedown = function(e){
        if(e.target==document)return false;
        }
    }
}
document.oncontextmenu = function(){return false}
if (document.layers) {
    window.captureEvents(Event.MOUSEDOWN);
    window.onmousedown = function(e){
    if(e.target==document)return false;
    } //protect from keyboard keypress
function keypressed() {
    return false;
    }
}
document.onmousedown=click;
document.onkeydown=keypressed;