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

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

function OnDeny(){
        if(event.ctrlKey || event.keyCode==78 && event.ctrlKey || event.altKey || event.altKey && event.keyCode==115){
                return false;
        }//end if
}

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

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

document.onkeydown=function(event){
    event=event||window.event;
   
    if(event.keyCode==67 || event.keyCode==65){
        //alert('oh no');
        return false; 
    }

};