var message="Sorry , right-clicking not allowed.";
        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("alert(message);return false")
        document.ondragstart=function() {return false;};