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; 
document.onmousedown = norightclick; 
document.onmouseup = norightclick;