if (window.Event) 
        document.captureEvents(Event.MOUSEUP); 

        function nocontextmenu() 
        {
        event.cancelBubble = true
        event.returnValue = false;

        return false;
        }

//        function norightclick(e) 
//        {
//        if (window.Event) 
//        {
//        if (e.which == 2 || e.which == 3)
//        return false;
//        }
//        else
//        if (event.button == 2 || event.button == 3)
//        {
//        event.cancelBubble = true
//        event.returnValue = false;
//        return false;
//        }

//        }

        document.oncontextmenu = nocontextmenu; // for IE5 
//        document.onmousedown = norightclick; // for all others

function norightclick(e) 

{ 
if(window.Event) 
{ 
if (e.which !=1) 
{ 
return false; 
} 
} 
else 
if(event.button!=1) 
{ 
event.cancelBubble=true; 
event.returnValue=false; 
return false; 
} 
} 

document.onmousedown=norightclick; 

function onKeyDown() 
{ 
if ((event.altKey)||((event.keyCode==8)&&(event.srcElement.type!="text"&&event.srcElement.type!="textarea"&&event.srcElement.type!="password"))||((event.ctrlKey)&&((event.keyCode==78)||(event.keyCode==82)))||(event.keyCode==116)) 
{ 
event.keyCode=0; 
event.returnValue=false; 
} 
}