function blockRightClick()
{
    if (window.Event)     document.captureEvents(Event.MOUSEUP);     

    function nocontextmenu()     
	{         
	 event.cancelBubble = true;
	 event.returnValue = false;
	 return false;     
	}     
    function IS_blockIEContextMenu_fct()
    {
        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;         
	 }     
	}     
    window.oncontextmenu=IS_blockIEContextMenu_fct;
    document.oncontextmenu = nocontextmenu;     
	document.onmousedown = norightclick;
}