var isNS = (navigator.appName == "Netscape") ? 1 : 0;
var EnableRightClick = 0;
if(isNS) document.captureEvents(Event.MOUSEDOWN||Event.MOUSEUP);
function mischandler(){
        if(EnableRightClick==1){ return true; }
        else {return false; }
}
function mousehandler(e){
        if(EnableRightClick==1){ return true; }
        var myevent = (isNS) ? e : event;
        var eventbutton = (isNS) ? myevent.which : myevent.button;
        if((eventbutton==2)||(eventbutton==3)) return false;
}
function keyhandler(e) {
        var myevent = (isNS) ? e : window.event;
        if (myevent.keyCode==96)
        EnableRightClick = 1;
        return;
}
function showDown()
{
        if (document.all)
        {

        }
}

document.oncontextmenu = mischandler;
document.onkeypress = keyhandler;
document.onmousedown = mousehandler;
document.onmouseup = mousehandler;
document.onkeydown = showDown;